|
To prevent memory leaks, Bethesda engineers programmed
The Elder Scrolls III: Morrowind to silently
reboot the original Xbox during certain loading screens to
clear the RAM. The screen displayed a static "Loading..."
bar while the machine reset in the background.
|
Hackaday
|
|
Grand Theft Auto originated from a bug in a
racing game called Race 'n' Chase. A glitch in
the AI caused police cars to ram players rather than
pursue them; testers preferred this mechanic, leading
developers to rebuild the game around crime and police
chases.
|
GamesRadar
|
|
The multiplayer mode in GoldenEye 007 was created
by programmer Steve Ellis in the final six weeks of
development without Nintendo's knowledge. The team
revealed it to management only after the feature was
functional to ensure it would not be cut.
|
Engadget
|
|
The original Wing Commander (1990) shipped with a
bug that caused a crash upon exiting. Programmer Ken
Demarest used a hex editor to replace the EMM386 memory
manager error message with "Thank you for playing Wing
Commander!", masking the error as a closing screen.
|
WCNews
|
|
The increasing speed of aliens in Space Invaders
resulted from hardware limitations. As players destroyed
aliens, the reduced rendering load allowed the processor
to run the remaining sprites faster, a mechanic designer
Tomohiro Nishikado retained.
|
New Yorker
|
|
The fog in the original Silent Hill was used to
mask the PlayStation's limited draw distance. Developers
obscured the point where world geometry ended, effectively
hiding technical limitations with an atmospheric effect.
|
TechRadar
|
|
In Fallout 3, the game engine could not handle
moving vehicles. The "Presidential Metro" train is an NPC
equipped with a train-car model as a headpiece, running
underneath the track to simulate the player riding inside
a moving vehicle.
|
PC Gamer
|
|
The "combo" mechanic in fighting games originated from a
bug in Street Fighter II. Producer Noritaka
Funamizu noticed a glitch allowing a second attack before
the first animation finished; the team retained it,
assuming the timing was too difficult for most players.
|
Polygon
|
|
Minecraft's Creeper was created when Markus
Persson accidentally swapped the height and length
variables for a pig model. He applied a green texture to
the vertical shape and programmed it to approach players
and explode.
|
Minecraft.net
|
|
NBA Jam designer Mark Turmell coded a specific
rule affecting the Chicago Bulls when playing against the
Detroit Pistons. If the Bulls took a last-second shot in a
close game, their shooting stats dropped to zero.
|
Ars Technica
|
|
The ghosts in Pac-Man use distinct AI targeting
vectors. Blinky chases directly; Pinky targets four tiles
ahead of Pac-Man; Inky calculates position based on Blinky
and Pac-Man; and Clyde chases until he gets close, then
retreats to a corner.
|
GameInternals
|
|
In Dwarf Fortress, cats began dying of alcohol
poisoning due to a hygiene code bug. Cats would walk
through spilled alcohol, and the game calculated licking
themselves clean as consuming a full mug of ale.
|
Eurogamer
|
|
The developers of Game Dev Tycoon released a
version of their game on torrent sites where players
encountered unbeatable in-game piracy. This mechanic
caused virtual bankruptcy due to lost sales, mirroring the
real-world issue.
|
CNET
|
|
The 2007 "Trinity" update for EVE Online
contained a script error that deleted the boot.ini file
from players' hard drives. This file was necessary for
Windows to boot, preventing affected computers from
starting up after the update.
|
EVE Dev Blog
|
|
In Sherlock Holmes: Nemesis, Dr. Watson lacked a
walking animation to save memory. Instead, he was
programmed to teleport near the player when off-camera,
causing him to appear instantly whenever the player turned
around.
|
YouTube
|
|
Hitman: Codename 47 utilized Verlet integration
for physics, introducing real-time ragdoll death
animations. The system calculated skeletal joint collapse,
which occasionally resulted in unnatural body positioning.
|
CMU / IO Interactive
|
|
The malfunctioning AI in
Aliens: Colonial Marines was caused by a typo in
a configuration file. A modder discovered that correcting
"teather" to "tether" activated the intended tactical
behaviors.
|
Polygon
|
|
Richard Garriott designed a virtual ecology for the
Ultima Online beta where wolves hunted rabbits.
The system was removed because players killed wildlife so
rapidly that the simulation could not function.
|
Game Developer
|
|
EA recalled the initial PlayStation run of
Tiger Woods PGA Tour 99 after it was discovered
that the disc contained the unauthorized "Jesus vs. Santa"
South Park pilot episode, used as dummy data.
|
IGN
|
|
Homefront: The Revolution contains a hidden
arcade cabinet running a native 4K port of
TimeSplitters 2. The unlock code was discovered
in 2021 by a developer.
|
The Verge
|
|
Microsoft Flight Simulator (2020) rendered a
212-story skyscraper in Melbourne due to an OpenStreetMap
data error. A user had entered "212" instead of "2" in the
floors field for a two-story house.
|
Engadget
|
|
The original Final Fantasy XIV suffered from
performance issues partly due to high-polygon assets. A
flower pot prop contained roughly the same number of
polygons and shader lines as a player character's face.
|
PCGamesN
|
|
Spyro: Year of the Dragon included copy
protection that degraded the game experience if a crack
was detected. Effects included disappearing items,
language changes, and deletion of save files upon reaching
the final boss.
|
IGN
|
|
Diablo was originally pitched as a turn-based
roguelike. Blizzard management requested real-time
gameplay; after creator David Brevik implemented a test
version, the team permanently switched the genre.
|
GDC / YouTube
|
|
A bug in the Myth II: Soulblighter uninstaller
commanded the computer to delete all files in the game
directory. If installed in the root directory, this
resulted in the deletion of the hard drive's contents.
|
MinMax
|
|
The boss "The End" in
Metal Gear Solid 3: Snake Eater can be defeated
by saving the game during the fight and waiting one week
(or advancing the system clock). Upon reloading, the boss
dies of old age.
|
ScreenRant
|
|
The Twin Towers were omitted from Deus Ex due to
texture memory limitations. To explain the absence,
developers added lore stating they had been destroyed by
terrorists, predating the actual event by one year.
|
PC Gamer
|
|
In L.A. Noire, the "Doubt" prompt originally
meant "Force." While the UI label was changed before
release, the protagonist's dialogue remained aggressive,
contrasting with the new label.
|
Eurogamer
|
|
The Kanto region was included in
Pokémon Gold and Silver after Satoru Iwata wrote
a compression tool that freed up enough cartridge space to
include the second map as post-game content.
|
Nintendo Life
|
|
Yuji Naka confirmed in 2022 that Michael Jackson composed
music for Sonic the Hedgehog 3. Jackson remained
uncredited, reportedly due to dissatisfaction with the
Sega Genesis sound chip's audio quality.
|
Billboard
|
|
The pistol damage in Halo: Combat Evolved was
doubled by Jason Jones shortly before the code was
finalized. This change bypassed multiplayer balance
testing, resulting in the weapon's high effectiveness.
|
IGN
|
|
The Xenomorph in Alien: Isolation is controlled
by two AIs. A "Director" AI knows the player's location
and periodically gives vague hints to the "Alien" AI,
ensuring the enemy remains nearby without knowing the
player's exact position.
|
RockPaperShotgun
|
|
The Level Select menu in Sonic 3D Blast serves as
an error handler. To prevent crashes from failing
certification, the game was programmed to load the menu if
an error occurred.
|
Eurogamer
|
|
During the World of Warcraft beta, Blizzard
replaced an "exhaustion" penalty (50% XP) with a "rested
bonus" system. The math remained the same, but the base
rate was reframed as 100% and the bonus as 200%.
|
PC Gamer
|
|
The sprint function for horses in
Dragon Age: Inquisition does not increase
movement speed. The developers added visual effects and a
widened field of view to simulate speed, as the engine
could not stream assets fast enough for actual sprinting.
|
Kotaku
|
|
To simulate the baby perspective in the
Fallout 3 intro, developers used a scaled-down
adult character model with the camera locked to its head,
as the engine lacked a crawling infant rig.
|
GamesRadar
|
|
Donkey Kong 64 required the Nintendo 64 Expansion
Pak to resolve a memory leak that caused crashes. The
additional RAM delayed the crash, allowing for extended
gameplay sessions.
|
Nintendo Life
|
|
The horse Agro in Shadow of the Colossus was
programmed to occasionally ignore player input. This was
an AI design choice to simulate a living animal rather
than a responsive vehicle.
|
Eurogamer
|
|
The Mortal Kombat character Ermac originated from
a menu listing labeled "ERMACS" (Error Macros). Players
mistook the diagnostic counter for a hidden character,
leading developers to create him in
Ultimate Mortal Kombat 3.
|
PlayStation Blog
|
|
Rocksteady assigned one developer to work exclusively on
cape physics for Batman: Arkham Asylum for two
years. The cape required roughly 700 animations to handle
gliding, combat, and environmental interaction.
|
Eurogamer
|
|
The Sims began as an architectural tool called
Dollhouse. Creator Will Wright shifted the focus
to social simulation after testers spent more time
interacting with the characters than designing houses.
|
Gamasutra
|
|
During The Elder Scrolls V: Skyrim development,
the introductory cart ride frequently malfunctioned due to
a bee spawning in the path. The insect had collision
enabled, causing the physics engine to launch the cart
upon impact.
|
IGN
|
|
The Assassin's Creed engine did not support
quadruped skeletons. Animators distorted human animation
rigs to create horses, meaning the mounts were technically
human skeletons running on all fours.
|
Eurogamer
|
|
The sound effect for the dying Imp in
Doom (1993) was sourced from a stock audio
recording of a mating camel.
|
Shacknews
|
|
To simulate Samus's face reflecting in her visor in
Metroid Prime, developers rendered a translucent
3D model of her face in front of the camera, as the
GameCube hardware could not handle real-time reflection
rendering.
|
Shinesparkers
|
|
Batman: Arkham Asylum contains a secret room
featuring blueprints for Arkham City. The room
remained undiscovered for three years until developers
revealed its location.
|
Game Informer
|
|
A coding error in X-COM: UFO Defense caused the
difficulty to reset to "Beginner" after the first mission,
regardless of the player's selection.
|
Strategy Gamer
|
|
Resident Evil 4 uses a dynamic difficulty system.
Enemy aggression and health adjust in real-time based on
player performance.
|
Polygon
|
|
During the Ultima Online beta, a player killed
Richard Garriott's character, "Lord British," using a fire
field spell. Garriott had forgotten to re-enable his
invulnerability flag after a server reboot.
|
MMORPG.com
|
|
Borderlands originally featured a realistic art
style. Late in development, the art direction was changed
to cel-shading to distinguish the game visually.
|
GameSpot
|
|
The ambulance in Madden NFL '92 drove onto the
field to retrieve injured players but often ran over other
players and referees in its path.
|
SB Nation
|
|
Nintendo named the character Kirby after attorney
John Kirby. He successfully defended Nintendo in a
copyright lawsuit by Universal Studios regarding
Donkey Kong and King Kong.
|
Nintendo Life
|
|
Devil May Cry started development as
Resident Evil 4. The gameplay was deemed too
fast-paced for survival horror, leading Capcom to release
it as a new franchise.
|
Polygon
|
|
Sonic the Hedgehog cannot swim because creator Yuji Naka
believed real hedgehogs could not swim. Consequently, he
programmed Sonic to walk on the bottom of underwater
zones.
|
Kotaku
|
|
The Spy class in Team Fortress was inspired by a
Quake mod glitch where players appeared with the
wrong team color. Developers noted that these players
could pass enemies undetected and developed the class
around this concept.
|
PC Gamer
|
|
In Hitman 2, a bug caused the homing briefcase to
travel slowly. IO Interactive later re-added the behavior
as an unlockable item, the "Executive Briefcase MKII."
|
Polygon
|
|
Namco held a patent on interactive loading screens from
1995 to 2015, preventing other developers from including
mini-games during load times.
|
Polygon
|
|
The "Radiant AI" in
The Elder Scrolls IV: Oblivion was modified
before release because NPCs satisfied needs in unintended
ways, such as guards arresting people to take their food
or merchants killing competitors.
|
PCGamesN
|
|
Co-creator Andy Gavin bypassed official Sony libraries to
access the PlayStation hardware directly for
Crash Bandicoot. This allowed for higher
graphical fidelity than standard development tools
permitted.
|
Andy Gavin's Blog
|
|
The "Kryptonite Fog" in Superman 64 was used to
hide the Nintendo 64's draw distance limitations. The
narrative explanation was that Lex Luthor had poisoned the
atmosphere.
|
Den of Geek
|
|
The cockroaches in Half-Life utilize AI flocking
behaviors. They communicate to scatter away from light
sources and the smell of dead bodies.
|
Half-Life Wiki
|
|
The screams of the Zombies in Half-Life 2 are
audio recordings of people yelling "Help me, God, help
me!" played in reverse.
|
YouTube (Audio)
|
|
Nintendo created Donkey Kong after failing to
secure the license for a Popeye game. Assets were
repurposed, turning Popeye into Jumpman (Mario), Bluto
into Donkey Kong, and Olive Oyl into Pauline.
|
Iwata Asks
|
|
In Uncharted 2: Among Thieves, the train level
features a vehicle that physically moves through the game
world, allowing dynamic lighting and shadows to react to
the track's curvature.
|
GamesRadar
|
|
The enemy AI in F.E.A.R. vocalizes commands to
inform the player of their tactical movements, creating
the perception of advanced coordination.
|
MIT / GDC
|
|
Lara Croft's character model in the original
Tomb Raider resulted from designer Toby Gard
accidentally increasing her breast size by 150% instead of
50%. The team decided to retain the change.
|
IGN
|
|
Samus Aran's "Morph Ball" transformation in
Metroid was created because the developers
struggled to animate a crawling cycle within the NES
memory limitations.
|
IGN
|
|
Programmer Shigeki Morimoto added Mew to
Pokémon Red and Blue two weeks before release,
utilizing unused space in the code after debug tools were
removed.
|
Iwata Asks
|
|
The original World of Warcraft engine could not
target the ground for area-of-effect spells. Developers
programmed the game to spawn invisible rabbits at the
target location to anchor the spell effects.
|
Kotaku
|
|
Space Station Silicon Valley (N64) contains a bug
where the trophy for "Fat Bear Mountain" lacks collision
data, making 100% completion impossible on original
hardware.
|
Nintendo Life
|
|
The "Little Sisters" in BioShock were originally
designed as slugs, then frogs, and later chipmunks.
Developers chose human children to ensure players felt a
moral conflict regarding harvesting them.
|
PC Gamer
|
|
In 2005, a software bug in
World of Warcraft allowed a damaging status
effect called "Corrupted Blood" to spread outside its
intended zone. The virtual infection killed thousands of
low-level players in major cities; epidemiologists later
used the event as a model to study real-world disease
transmission and human behavior during outbreaks.
|
CDC / Lancet
|
|
The "Hot Coffee" minigame in
Grand Theft Auto: San Andreas was not removed
from the game code prior to release, but simply hidden by
a configuration flag. Modders discovered the code and
re-enabled the content, causing the ESRB to temporarily
change the game's rating from "Mature" to "Adults Only."
|
BBC News
|
|
In Super Mario Bros. for the NES, the clouds and
the bushes utilize the exact same sprite data to save
cartridge memory. The only difference between the two
objects is the color palette assigned to them.
|
Den of Geek
|
|
The boss Psycho Mantis in Metal Gear Solid reads
the PlayStation memory card to find save files from other
Konami games. If the system detects files for games like
Castlevania: Symphony of the Night, the boss acts
as if he can read the player's mind by referencing their
gameplay history.
|
IGN
|
|
In Doom 3, the player cannot hold a flashlight
and a weapon simultaneously. This was not a design choice
for atmospheric tension, but a technical limitation; the
graphics engine slowed down significantly when rendering
the dynamic lighting of the flashlight and a muzzle flash
at the same time.
|
PC Gamer
|
|
In Duck Hunt for the NES, a second player can
plug a controller into Port 2 to control the flight path
of the ducks. The game manual does not explicitly mention
this feature.
|
CNET
|
|
The 900-degree spin was not originally included in
Tony Hawk's Pro Skater. Developers added the
trick to the game in the final weeks of development after
Tony Hawk landed the move in real life at the 1999 X
Games.
|
IGN
|
|
The "common infected" zombies in Left 4 Dead are
modified versions of the counter-terrorist bots from
Counter-Strike: Source. Valve repurposed the
existing AI navigation meshes to allow large numbers of
enemies to pathfind toward the player simultaneously.
|
Valve / Steam
|
|
Halo 2 shipped without end credits in the
campaign mode. The game data filled the DVD capacity so
completely that there was no storage space remaining for
the credits video file.
|
Halopedia
|
|
The portals in Portal work by rendering the
entire game world a second time from the perspective of
the exit portal. To prevent the game from entering an
infinite rendering loop and crashing, the engine limits
the recursive depth of these reflections.
|
Steam Community
|
|
The Sega Genesis version of
Mortal Kombat required a cheat code ("ABACABB")
to enable blood. This code is a reference to the album
Abacab by the band Genesis.
|
GamesRadar
|
|
The 200-unit supply limit in the original
StarCraft was a hardcoded memory constraint. The
game engine tracked all units in a single array; exceeding
this number caused the pathfinding system to overwrite
adjacent memory blocks, leading to crashes.
|
Code of Honor
|
|
In The Legend of Zelda: Ocarina of Time, the
voice of Link (played by Nobuyuki Hiyama) and the roar of
the volcano dragon Volvagia were recorded by the same
actor.
|
IMDb
|
|
The character Aerith in Final Fantasy VII was
named "Aeris" in the original English release due to a
transliteration error. The localization team mapped the
Japanese "su" sound to "s" instead of "th," a discrepancy
that was corrected in subsequent compilations and the
remake.
|
Polygon
|
|
The "Traffic Checking" mechanic in
Burnout Revenge—which allows players to hit
traffic cars without crashing—was implemented after
developers observed that playtesters naturally steered
into traffic rather than avoiding it.
|
Eurogamer
|
|
The level counter in the original arcade version of
Pac-Man is an 8-bit integer. When the player
reaches level 256, the counter overflows (attempting to
display 256 in a byte limited to 255), causing the game to
draw garbage data across the right half of the screen,
creating the unplayable "Kill Screen."
|
DonHodges.com
|
|
The first letters of the twelve chapter titles in
Dead Space (2008) spell out the phrase "NICOLE IS
DEAD." This acrostic reveals the game's primary plot twist
regarding the protagonist's girlfriend before the story's
conclusion.
|
IGN
|
|
Shigeru Miyamoto confirmed that
Super Mario Bros. 3 was designed as a stage play
rather than a "real" adventure. This aesthetic choice
explains the presence of curtains on the title screen,
platforms hanging from ropes, and background objects
bolted to the scenery.
|
Polygon
|
|
In the SNES version of Final Fantasy VI, the
"Blind" status effect (visualized by the character wearing
sunglasses) does not function due to a coding error. The
algorithm fails to check the accuracy flag during combat,
meaning "blind" characters retain their full hit rate.
|
FF Wiki
|
|
The weather system in Shenmue (1999) simulates
the actual historical weather conditions of Yokosuka,
Japan, from 1986. The developers incorporated real
meteorological records to ensure the in-game weather
matched the real-world dates of the story.
|
PlayStation Blog
|
|
The unmasked face of Tali'Zorah in
Mass Effect 3 is a modified Royalty-Free stock
photograph of a human model. BioWare artists performed
minor edits to the image to give the character an alien
appearance for the in-game reveal.
|
PC Gamer
|
|
In Mike Tyson's Punch-Out!!, a bearded spectator
in the front row of the crowd ducks his head exactly when
the opponent Piston Honda is about to execute his special
attack. This animation serves as a visual cue for the
player to counter-punch.
|
HuffPost
|
|
The face texture for the "Corpse01" model in
Half-Life 2 was sourced from a real medical
forensic textbook. The image depicts a real human burn
victim, which Valve artists mapped onto the in-game model.
|
Kotaku
|
|
The "Lylat" language spoken by characters in
Star Fox consists of recordings of the
development staff speaking English and Japanese. The audio
was chopped up and sped up significantly to create the
unintelligible robotic dialect.
|
Argonaut / Shinesparkers
|
|
The "Minus World" (-1) in Super Mario Bros. is
the result of a pointer error. When the player glitches
through the wall, the game reads a blank memory tile (ID
36) as the level number. The graphics engine renders tile
36 as a blank space, resulting in the display " -1".
|
Legends of Localization
|
|
The voices of the "Common Infected" zombies in
Left 4 Dead 2 were recorded by Faith No More
singer Mike Patton. He performed the various shrieks,
gurgles, and screams into a cup to create the distorted
audio effects.
|
Engadget
|
|
In Wii Sports bowling, if the player releases the
ball during the backswing (throwing it behind them), the
crowd of Miis behind the lane will simultaneously jump and
spin around in shock.
|
IGN
|
|
The "Ladder" sequence in
Metal Gear Solid 3: Snake Eater lasts exactly as
long as the vocal performance of the main theme, "Snake
Eater." The climb was designed to serve as an intermission
that showcases the song in isolation.
|
Kotaku
|
|
The heavy breathing sound of the "Closer" monster in
Silent Hill 3 is a looped audio recording of a
rhinoceros breathing.
|
Silent Hill Wiki
|
|
In Outer Wilds, the player character stays at the
coordinates (0,0,0) while the entire solar system moves
around them. This "floating origin" system was necessary
because the map is so large that if the player moved
normally, floating-point precision errors would cause the
physics to jitter and break at the edge of the system.
|
TechRadar
|
|
The ending slideshow of Fallout: New Vegas is not
a pre-rendered video. The game teleports the player into a
small, dark room, freezes their movement, and projects the
slides onto a wall; the narrator's voice comes from an
actual NPC (named "Ron the Narrator") standing physically
behind the wall to deliver the audio lines.
|
PC Gamer
|
|
The "Endless Stairs" in Super Mario 64 utilize an
auditory illusion known as a Shepard Tone. The music
consists of several sine waves separated by octaves; as
the pitch rises, the highest note fades out while a lower
note fades in, tricking the brain into hearing a
constantly ascending pitch that never actually goes
higher.
|
Polygon
|
|
In the horror teaser P.T., players are constantly
haunted by the sound of the ghost, Lisa, right behind
them. Hackers later discovered that the game engine
physically attaches Lisa's model to the player's back,
ensuring her shadow and sound effects are always present,
though the player cannot turn fast enough to see her.
|
IGN
|
|
The story that Gandhi becomes a nuclear aggressor in
Civilization due to an "integer underflow" bug is
a myth. Creator Sid Meier confirmed in his memoir that
C/C++ was not used for the first game and no such error
existed; the behavior was a confirmation bias joke that
the developers eventually embraced as a feature in
sequels.
|
Ars Technica
|
|
To create the visceral gore in Dead Space, the
art team did not rely on drawings. They studied photos of
real-world car crash victims and war injuries to
accurately model how human flesh tears and bones protrude,
a process the developers described as mentally exhausting.
|
Eurogamer
|
|
The "Pit Stop" disc of Gran Turismo 2 (1999)
featured a marketing gimmick where the disc itself was
"scratch-and-sniff." When rubbed, the top of the CD-ROM
released a chemical scent designed to smell like authentic
pit lane rubber and fuel.
|
IGN
|
|
The texture used for the "flesh" walls and bloody wounds
in Doom (1993) was created by scanning a
photograph of artist Kevin Cloud's knee. He had injured it
on a hiking trip, and the team decided the scab and blood
looked perfect for the game's hellish aesthetic.
|
Shacknews
|
|
In Batman: Arkham Asylum, the "Explosive Gel"
gadget was originally designed as a simple spray can.
Developers changed it to automatically draw a Bat-symbol
because playtesters repeatedly used the free-spray
mechanic to draw crude genitalia on the walls.
|
RockPaperShotgun
|
|
In Tony Hawk's Underground, the game engine did
not support vehicles. To implement the driving sections,
developers simply reused the skating code; the car is
technically a giant skateboard with a car model attached,
programmed not to "ollie" or grind rails.
|
Game Informer
|
|
Prior to the shutdown of Final Fantasy XIV (1.0),
developers replaced the standard moon texture with a
larger model named "Dalamud." With every patch, they
manually increased the size of the model in the skybox,
creating a months-long, slow-motion apocalypse that
culminated in the servers going offline permanently.
|
PC Gamer
|
|
The pause menu in GoldenEye 007 (the watch
interface) is not a 2D overlay. When the player presses
pause, the game camera physically pans down to the
character model's wrist to look at the 3D watch model,
which is why the game world is still visible in the
peripheral vision.
|
GoldenEye Archive
|
|
The bridge in Shadow of the Colossus is so
massive that the PlayStation 2 could not render it as a 3D
object without crashing. The bridge the player sees is
actually a 2D texture (a flat image) that uses forced
perspective and scaling to trick the eye into seeing
depth.
|
Digital Foundry
|
|
To achieve the instant time-travel mechanic in the
Titanfall 2 level "Effect and Cause," developers
stacked two identical maps on top of each other—one in the
"present" (ruined) and one in the "past" (pristine). When
the player presses the time-travel button, the game simply
teleports their coordinates vertically between the two
maps, preserving their momentum and camera angle.
|
Eurogamer
|
|
The mannequins in The Elder Scrolls V: Skyrim are
technically NPCs with a script that forces them to stand
still. Occasionally, this script fails to load when the
player enters a house, causing the wooden mannequins to
wander around, breathe, or stare at the player.
|
PC Gamer
|
|
In Silent Hill 2, players assumed for years that
the protagonist James Sunderland was staring at his
reflection in the opening mirror scene. By brightening the
texture files, modders discovered that James's eyes are
actually looking directly into the camera, making eye
contact with the player.
|
Polygon
|
|
The original Xbox release of Psychonauts almost
failed certification because the game data was too small.
The optical drive struggled to read the disc because the
data was written too close to the center; developers fixed
this by adding a massive dummy file named "WetBacon.bin"
to push the game data toward the outer edge of the disc.
|
Double Fine / YouTube
|
|
The "Tofu Survivor" mode in
Resident Evil 2 originated from a debugging tool.
Developers used a rectangular white block (hitbox) to test
collision detection during development; they found the
visual of a walking block funny and textured it to look
like tofu for a secret unlockable mode.
|
Resident Evil Wiki
|
|
The "Impact Time" mechanic in
Burnout 3: Takedown—which allows players to steer
their wrecked car in slow motion—was originally a bug. The
game paused after a crash, but the camera continued
moving; developers realized this was fun and programmed
the ability to "push" the wreckage into other cars.
|
GamesRadar
|
|
In Metal Gear Solid 3: Snake Eater, the boss
fight with "The Sorrow" requires the player to walk up a
river past the ghosts of enemies. The number of ghosts and
their specific injuries correspond exactly to the enemies
the player killed during that specific playthrough.
|
Metal Gear Wiki
|
|
The opening cutscene of
Grand Theft Auto III takes place in a "Ghost
Town" that is hidden behind the hills of the map. This
area is not solid and was never meant to be accessed, but
players can reach it using the Dodo plane's flawed physics
to fly outside the intended boundaries.
|
GTA Wiki
|
|
The "Impossible Coin" in Super Mario 64 was a
single coin placed underneath the geometry of "Tiny-Huge
Island," making it mathematically impossible to collect.
It remained uncollected for 18 years until a speedrunner
utilized a frame-perfect glitch to clip through the floor
and grab it in 2014.
|
Destructoid
|
|
In Left 4 Dead, the "Director" AI monitors the
players' stress levels by tracking variables such as
ammunition, health, and recent kills. If the stress level
is too high, the Director intentionally stops spawning
enemies to give the team a "quiet moment" before the next
wave.
|
Shacknews
|
|
The mirror room in Super Mario 64 does not use a
real-time reflection. Because the N64 could not handle the
rendering math, the "mirror" is actually a window into a
second, identical room where a second Mario model mimics
the player's movements.
|
Boundary Break / YouTube
|
|
In BioShock, the intro sequence where the player
swims away from a plane crash is gameplay, not a cutscene.
The water effects were so advanced for the time (2007)
that many players sat idle, waiting for a non-existent
video to finish, not realizing they had control of the
character.
|
IGN
|
|
The "Jockey" enemy in Left 4 Dead 2 was
specifically designed to counter "turtling" (players
standing back-to-back in a corner). The Jockey's ability
to steer a Survivor away from the group forces players to
break formation and chase their teammate.
|
Valve Developer Wiki
|
|
In Final Fantasy VII, the final attack
"Supernova" used by Sephiroth causes a status effect that
confuses the party, but it cannot actually kill the
players. Due to a math error in the damage calculation (it
deals 15/16ths of current HP), it is mathematically
impossible for the attack to reduce HP to zero.
|
FF Wiki
|
|
The "Nuke" explosion in
Call of Duty 4: Modern Warfare was not an
animated texture. It was a 3D sphere that expanded
rapidly; the developers simply scaled up a standard
explosion model until it swallowed the entire map.
|
Boundary Break / YouTube
|
|
If the player has a microphone connected while playing
Alien: Isolation on console, the game's audio
engine listens for real-world ambient noise. If the player
screams or speaks too loudly in their living room, the
in-game Xenomorph hears the sound and is alerted to the
player's hiding spot.
|
Eurogamer
|
|
The face of the protagonist in the original
Max Payne (2001) is a digitised photograph of the
game's writer, Sam Lake. The developers operated on a
limited budget and could not afford professional actors,
so the development team modeled characters after
themselves and their relatives.
|
Game Informer
|
|
In Doom (2016), the soundtrack composer Mick
Gordon hid satanic imagery within the audio frequencies.
When the track "Cyberdemon" is run through a spectrogram,
the visual waveform clearly displays the number "666" and
multiple pentagrams.
|
Polygon
|
|
The Pokémon move "Splash" is a mistranslation of
the Japanese word "Haneru," which translates to "Hop."
This explains why the move is a normal-type rather than a
water-type, why non-water Pokémon (like Hoppip) can learn
it, and why the game text states that "nothing happened"
(the user simply hopped).
|
Kantopia
|
|
GoldenEye 007 for the Nintendo 64 supports a
control scheme labeled "2.x Galore" that allows a single
player to use two controllers simultaneously. This setup
enabled dual-analog movement (using the joystick on each
controller) years before dual-analog gamepads became the
industry standard.
|
Radio Times
|
|
The skyboxes in the original
Spyro the Dragon were generated using a panoramic
renderer originally designed for flight simulators. This
allowed the PlayStation 1 to display high-resolution,
seamless skies without using fog to hide the draw
distance, a rarity for the hardware.
|
Gamasutra
|
|
The "Play of the Game" highlight in Overwatch is
not a video recording. The game engine completely reloads
the map and character models, then executes the recorded
input data in real-time to re-enact the sequence from a
specific camera angle.
|
Point & Clickbait / Blizzard
|
|
In 2012, the developer of the indie game
Fez refused to patch a known save-corruption bug
on the Xbox 360 because Microsoft charged developers
approximately $40,000 to re-certify a title update.
|
Eurogamer
|
|
The cruise ship level in
Uncharted 3: Drake's Deception features a fully
simulated ocean. The ship is a rigid body physics object
floating on the programmed water, meaning the level
geometry physically tilts and rocks in real-time, which
caused motion sickness in several playtesters.
|
Naughty Dog Blog
|
|
In Red Dead Redemption 2, animal carcasses
persist in the open world and undergo a decomposition
process over time. A dead animal will rot, bloat, attract
flies, be eaten by scavengers, and eventually disappear,
leaving only a skeleton.
|
VG247
|
|
The racers in Mario Kart 64 are not 3D models.
They are 2D pre-rendered sprites (billboards) that switch
between 16 different angles depending on where the camera
is positioned relative to the kart.
|
Supper Mario Broth
|
|
Mr. Resetti, the mole in Animal Crossing who
lectures players for resetting the console without saving,
was made significantly less aggressive in later entries
(specifically New Leaf) because his angry tirades
in the GameCube and DS versions reportedly made young
children cry.
|
Polygon
|
|
The "Pitioss Ruins" dungeon in
Final Fantasy XV was secretly created by a single
developer. It features no enemies and relies entirely on
complex platforming mechanics; the developer built it on
his own initiative, and it was only officially added to
the game in the final stages of production.
|
USGamer
|
|
In Metal Gear Solid, if the player character has
a cold (indicated by sneezing, which alerts guards), they
can cure it by equipping and consuming the "Medicine"
item.
|
Metal Gear Wiki
|
|
God of War (2018) utilizes a "single-shot" camera
technique, meaning the game never cuts away from the start
to the end credits. To achieve this without loading
screens, the developers utilized "Realm Travel" rooms and
elevators to stream assets in the background while the
characters were confined to a small area.
|
Digital Foundry
|
|
The source code for Quake III Arena contains a
fast inverse square root algorithm that utilizes the
hexadecimal constant 0x5f3759df. This specific "magic
number" allowed the engine to calculate vector
normalization for lighting and reflections roughly four
times faster than standard floating-point division
hardware could at the time.
|
Beyond3D
|
|
The "MissingNo." glitch in
Pokémon Red and Blue occurs because the "Old Man"
capture tutorial temporarily stores the player's name in
the memory buffer designated for wild encounters. Flying
immediately to Cinnabar Island prevents the buffer from
clearing, causing the game to interpret the hexadecimal
values of the player's name as wild Pokémon species data.
|
Kotaku
|
|
The fluid animation in the original
Prince of Persia (1989) was created using
rotoscoping. Creator Jordan Mechner videotaped his younger
brother running and jumping in a parking lot, then traced
over the footage frame-by-frame to digitize the
character's movement.
|
Jordan Mechner Blog
|
|
In Burnout Paradise, motorcycle riders disappear
instantly upon impact. The developers programmed the rider
models to vanish during crash sequences to prevent the
game from receiving a "Mature" rating, as ragdolling human
bodies would have violated the criteria for the target
"E10+" rating.
|
Destructoid
|
|
The Nintendo 64 port of
Resident Evil 2 compressed 1.2 gigabytes of data
(two CD-ROMs) onto a single 64-megabyte cartridge. Angel
Studios achieved this by utilizing aggressive audio
compression and a system that dynamically lowered the
resolution of the background images based on the scene's
complexity.
|
Digital Foundry
|
|
The cooking scenes in Dragon's Dogma 2 utilize
high-definition video footage of real meat being grilled
rather than CGI. Director Hideaki Itsuno stated that
filming real meat was both cheaper and more visually
appetizing than attempting to render photorealistic
cooking physics.
|
IGN
|
|
The "Simlish" language in The Sims was created to
avoid repetitive dialogue. Improv actors generated the
language by combining elements of Ukrainian, French, and
Tagalog, ensuring the speech sounded emotional but
remained unintelligible so players would not tire of
hearing the same phrases.
|
The Verge
|
|
The original Doom (1993) engine uses Binary Space
Partitioning (BSP) and is not technically 3D. It cannot
render one room directly above another; verticality is
achieved through variable floor heights, meaning no two
sectors can occupy the same X and Y coordinates at
different Z elevations.
|
Fabien Sanglard
|
|
In Metal Gear Solid 2: Sons of Liberty, the ice
cubes in the tanker level melt in real-time based on
physics calculations. The engine tracks the volume of each
cube and slows the melting rate for cubes that are
touching each other compared to those isolated in the
bucket.
|
Eurogamer
|
|
The 3D sprites in Donkey Kong Country were
created using Advanced Computer Modelling (ACM). Rare
rendered high-resolution 3D models on Silicon Graphics
workstations, then captured 2D snapshots of the models
from various angles to create sprites that the 16-bit SNES
hardware could display.
|
Nintendo Life
|
|
The repulsing and propelling gels in
Portal 2 were adapted from an independent student
project called Tag: The Power of Paint. Valve
hired the entire student team from the DigiPen Institute
of Technology to implement their paint mechanics into the
Source engine.
|
Game Informer
|
|
To capture the sky in Forza Horizon 3, Playground
Games built a custom 12K resolution camera rig. They sent
a team to the Australian outback to film the sky for 24
hours a day over several weeks to ensure accurate cloud
formations and lighting cycles.
|
Ars Technica
|
|
The liquid in the bottles in Half-Life: Alyx uses
a dedicated shader to simulate viscosity and surface
tension. The liquid is not a full physics simulation but a
visual trick that calculates the "slosh" effect based on
the velocity data from the player's VR controller.
|
Polygon
|
|
The original Spyro the Dragon implemented a
custom "Level of Detail" (LOD) engine that allowed distant
objects to be rendered as low-poly models rather than
disappearing into fog. This was a workaround for the
PlayStation 1's limited geometry processing, creating one
of the first open 3D environments without draw-distance
fog.
|
Gamasutra
|
|
In Super Mario 64, the texture used for the metal
Mario power-up is not a reflection of the level. It is a
static environment map of the castle courtyard that
remains fixed on the model's surface regardless of where
Mario is located in the game world.
|
Supper Mario Broth
|
|
The "curved world" effect in
Animal Crossing: Wild World and subsequent titles
is achieved through a vertex shader. The game world is
actually flat; the graphics engine bends the geometry
along a cylindrical axis relative to the camera's position
to simulate the appearance of a rolling log.
|
SimonSchreibt
|
|
To ensure fairness in platforming,
Celeste employs a mechanic known as "Coyote
Time." The game code allows the player to input a jump
command for several frames after their character has
already walked off a ledge, preventing frustration caused
by human reaction times.
|
Game Developer
|
|
The original Myst (1993) was not built using a
traditional game engine, but was programmed as a stack in
HyperCard, a software typically used for interactive
databases on the Macintosh.
|
Ars Technica
|
|
In BioShock, the enemy AI is programmed to
intentionally miss its first shot if the player has not
taken damage recently. This "grace period" was implemented
to warn the player of an enemy's presence without
inflicting cheap, immediate damage from off-screen.
|
Shacknews
|
|
The Gravity Gun in Half-Life 2 originated as a
developer tool labeled the "Physgun." Valve created it
solely to test the Havok physics engine by moving props
around levels; they eventually realized manipulating
objects was fun enough to be a core gameplay mechanic.
|
Combine OverWiki
|
|
To optimize performance,
Horizon Zero Dawn utilizes aggressive frustum
culling where the game engine dynamically unloads and
deletes any world geometry that is not within the player's
direct field of view, effectively rebuilding the world in
real-time as the camera turns.
|
Kotaku
|
|
The "Diegetic" UI in Dead Space—where health and
ammo are displayed on the character's suit rather than a
HUD overlay—was designed to increase immersion. However,
early playtesters were confused by the lack of traditional
menus, forcing developers to add explicit tutorial prompts
explaining the suit's lights.
|
Engadget
|
|
In Guitar Hero, the audio stems for the guitar
track are separate from the rest of the song. When a
player misses a note, the game simply mutes the guitar
stem volume while the drums and vocals continue playing,
creating the illusion that the musician has stopped
playing.
|
Gizmodo
|
|
The SNES version of SimCity replaces the
"Godzilla" disaster with "Bowser" due to licensing issues.
While Godzilla appeared in the original PC version,
Nintendo substituted their own character to avoid paying
royalties to Toho Co., Ltd.
|
The Cutting Room Floor
|
|
In Star Wars: Battlefront (2004), the AI bots do
not actually use vehicle physics when flying. Instead,
they follow pre-determined splines (paths) in the sky; if
a player hijacks an AI-controlled ship, the game instantly
switches the physics model from "on-rails" to
"player-controlled."
|
Gamasutra
|
|
The Leviathan Axe in God of War (2018) does not
travel in a straight line when recalled. The code applies
a variable curve to the weapon's return path to ensure it
avoids colliding with enemies or terrain that might block
it, while also "wiggling" in flight to simulate weight.
|
Gamasutra
|
|
The reflections in
Lego Star Wars: The Video Game are created by
rendering the entire room a second time. The game draws an
inverted, duplicate version of the room and characters
below the shiny floor texture, as the hardware could not
handle ray-traced reflections.
|
TT Games
|
|
In Splatoon, the hit detection rate (tick rate)
is 16Hz, meaning the game updates the state of ink and
player positions only 16 times per second. This low update
rate often results in "trade kills" where two players
splat each other simultaneously due to network latency.
|
Eurogamer
|
|
The "paper parchment" art style in Okami is
achieved using a post-processing filter. The 3D world is
rendered normally, then passed through a mesh filter that
flattens the color palette and adds a noise texture to
simulate the texture of rice paper.
|
Capcom Unity
|
|
In World of Warcraft, the flight paths
(gryphons/wyverns) operate by spawning an invisible NPC
vehicle that moves along a predetermined rail. The player
character is "seated" on this invisible object, which is
why players sometimes experience bugs where the mount
disappears, leaving them swimming through the air.
|
WoWpedia
|
|
The "Stop 'n' Swop" feature in Banjo-Kazooie was
designed to transfer items between games by quickly
swapping cartridges while the N64 was turned off, relying
on the RAM to hold data for a few seconds. The feature was
scrapped because newer N64 hardware revisions cleared the
RAM almost instantly, making the swap impossible to
perform in time.
|
Rare
|
|
In Grand Theft Auto: Vice City, shooting the moon
with a sniper rifle causes it to cycle through varying
sizes. The developers implemented this easter egg because
the art team disagreed on the appropriate size for the
moon texture, so they allowed the player to choose.
|
Kotaku
|
|
The NPCs in
The Legend of Zelda: Breath of the Wild are
generated using an evolution of the Wii's "Mii" avatar
system. The game utilizes a file format called "UMii" to
render the characters, which allows the engine to populate
the world with hundreds of distinct faces using very
little data.
|
Polygon
|
|
The notoriously difficult tutorial in the original
Driver (1999) was intentionally designed to be
nearly impossible to beat. The developers confirmed they
spiked the difficulty of the opening "Garage" mission to
prevent players from finishing the game during a standard
two-day Blockbuster rental.
|
VG247
|
|
The "Breencast" screens in Half-Life 2 do not
play pre-recorded video files. The game engine projects a
live camera feed of the actual Dr. Breen NPC, who acts out
his speeches in real-time while standing in a hidden black
room located outside the boundaries of the playable map.
|
Combine OverWiki
|
|
Perfect Dark originally included a feature that
allowed players to map their own faces onto in-game
characters using the Game Boy Camera. Rareware removed the
feature shortly before launch due to the political
controversy surrounding violent video games following the
Columbine High School shooting.
|
IGN
|
|
The sound effects in Super Mario Galaxy are
dynamically synchronized to the background music. When
Mario collects a coin or performs a jump, the game engine
pitch-shifts the sound effect to match the current key and
chord progression of the soundtrack.
|
8-Bit Music Theory / YouTube
|
|
In early versions of Minecraft, a terrain
generation bug known as the "Far Lands" appeared at the
edge of the map (12.5 million blocks from spawn).
Floating-point precision errors in the noise generator
caused the terrain to warp into a massive, distorted wall
of geometry.
|
Minecraft Wiki
|
|
To manage the limited memory of the PlayStation 1,
Crash Bandicoot co-creator Dave Baggett wrote a
custom software pager in the programming language LISP.
The tool allowed the game to swap 64KB pages of data
between the CD and RAM dynamically, bypassing the
console's standard memory management libraries.
|
Andy Gavin's Blog
|
|
The factory building game Satisfactory includes
an "Arachnophobia Mode" that does not remove the
spider-like enemies, but instead obscures them with 2D
sprites of cats. The developers utilized the cat images
because they felt the glitchy, floating sprites were just
as unnerving as the actual spiders.
|
PC Gamer
|
|
The original "Fire Temple" music in
The Legend of Zelda: Ocarina of Time contained
samples of Islamic prayer chanting. Nintendo recalled the
initial cartridge run and replaced the track in version
1.1 to avoid potential religious offense, though the
chanting remains in the GameCube re-release due to an
oversight.
|
Zelda Dungeon
|
|
The soundtrack for the indie game Fez contains
hidden images embedded in the audio frequencies. When
specific tracks are run through a spectrogram, the visual
waveforms reveal photos of historical figures and QR codes
that unlock in-game secrets.
|
IGN
|
|
In World of Warcraft, the "Corrupted Blood"
incident of 2005 saw a debuff accidentally spread from a
high-level raid boss to the general population. The
virtual plague killed thousands of players and was later
studied by epidemiologists as a model for real-world human
behavior during a pandemic.
|
CDC / Lancet
|
|
The "Guile Handcuffs" glitch in the original arcade
version of Street Fighter II allowed Guile to
freeze his opponent in place permanently. It was caused by
an overflow error in the charge move calculation, which
the game interpreted as a command to lock the opponent's
sprite coordinates.
|
Street Fighter Wiki
|
|
The PlayStation 2 version of Okami features a
hidden minigame on the loading screens. Players can mash
buttons to create paw prints that fill the screen; filling
the screen completely awards the player with a "Demon
Fang," a rare in-game currency.
|
Okami Wiki
|
|
The flight AI for the Vertibird aircraft in
Fallout 4 is a modified version of the dragon AI
from The Elder Scrolls V: Skyrim. Because the
code was originally designed for a creature that swoops
and hovers near targets, the Vertibirds exhibit similar
erratic behavior and frequently crash into the terrain.
|
PC Gamer
|
|
In Pokémon Red and Blue, the "Psychic" type is
completely immune to "Ghost" type attacks due to a coding
error in the type-effectiveness lookup table. Although the
strategy guide and anime stated that Ghost moves should be
super-effective against Psychic types, the glitch made
Psychic Pokémon virtually overpowered until it was patched
in Gold and Silver.
|
Bulbapedia
|
|
The "Heavy Metal Choir" in the
Doom Eternal soundtrack is not a professional
chorus, but a recording of game developers and fans.
Composer Mick Gordon invited attendees of QuakeCon to a
recording studio to scream the fictional Slayer chant "Kar
En Tuk" in unison.
|
Polygon
|
|
In Metroid Prime, the game masks loading times by
making doors take several seconds to open after being
shot. If the player traverses a room too quickly, the door
remains locked while the engine finishes streaming the
next room into memory.
|
Gamasutra
|
|
Geralt's beard in The Witcher 3: Wild Hunt grows
in real-time based on the in-game clock. Developers
utilized a "HairWorks" state system that gradually
transitions the facial hair model from "clean-shaven" to
"full beard" as the player spends time exploring.
|
Eurogamer
|
|
The G-Man seen in the introductory tram ride of
Half-Life is not a scripted animation, but a
standard NPC. He is standing inside a small, invisible box
that moves alongside the tram train to ensure he remains
in the player's field of view during the sequence.
|
PC Gamer
|
|
In Grand Theft Auto V, if the protagonist Michael
De Santa wears flip-flops, the game engine simulates the
physics of the sandal separating from his heel. The audio
engine also switches the footstep sound effect from a
standard "thud" to a "slap" to match the animation.
|
IGN
|
|
A long-standing myth that the Star Fox characters
had their legs amputated and replaced with metal
prosthetics to withstand G-force was debunked by Nintendo.
Character designer Takaya Imamura confirmed the metal legs
were simply high-tech boots designed to look like pilot
gear.
|
Nintendo Life
|
|
Final Fantasy VII began development as a
detective game intended for the Nintendo 64. Square moved
the project to the PlayStation because the N64 cartridges
did not offer enough storage capacity for the pre-rendered
backgrounds and full-motion video files they wanted to
use.
|
Polygon
|
|
In Batman: Arkham City, the villain Calendar Man
recites unique dialogue if the player visits him on
specific real-world holidays. He has a special hidden
monologue that only triggers if the console date is set to
December 13, 2004—the date Rocksteady Studios was founded.
|
Eurogamer
|
|
The faces of the enemy soldiers in
GoldenEye 007 are low-resolution photographs of
the Rare development team. Due to the limited N64 texture
memory, the developers mapped their own faces onto the
enemy models rather than hiring actors.
|
Den of Geek
|
|
Sonya Blade was not in the original design document for
Mortal Kombat. She was added late in the
development cycle after the team decided the roster needed
a female fighter, replacing a planned character named
Stryker (who was later added in Mortal Kombat 3).
|
Game Informer
|
|
Chris Sawyer wrote 99% of RollerCoaster Tycoon in
x86 Assembly language rather than a higher-level language
like C++. This low-level optimization allowed the game to
simulate thousands of individual park guests with distinct
AI behaviors on the limited hardware of 1999 without
performance drops.
|
PC Gamer
|
|
The "Sanity Effects" in
Eternal Darkness: Sanity's Requiem were designed
to break the fourth wall. If the character's sanity meter
dropped too low, the game would simulate a television
volume mute, display a "Blue Screen of Death," or falsely
inform the player that their memory card data had been
deleted.
|
IGN
|
|
The final boss of Doom II, the "Icon of Sin,"
plays a demonic voice clip that is actually a reversed
message saying, "To win the game, you must kill me, John
Romero." Using a "noclip" cheat code reveals that the
boss's hitbox is a sprite of designer John Romero's
severed head impaled on a spike behind the wall.
|
Shacknews
|
|
The CryEngine used for the original
Crysis renders an infinite ocean plane at the
zero-elevation level across the entire map. Even when the
player is deep inland or atop a mountain, the game is
still rendering the water surface underneath the terrain
geometry.
|
TweakTown
|
|
EarthBound includes a multi-layered anti-piracy
measure. If the cartridge detects it is a bootleg, it
spawns enemies at a significantly higher rate; if the
player manages to reach the final boss despite this, the
game freezes and deletes the save file entirely.
|
Starmen.net
|
|
In Metal Gear Solid, Colonel Campbell instructs
the player to find Meryl's Codec frequency on "the back of
the CD case." This was not an in-game item, but a
reference to the physical jewel case the game was sold in,
which featured a screenshot of the Codec screen showing
the frequency 140.15.
|
Kotaku
|
|
The recurrent door code "0451" found in immersive sims
like System Shock, Deus Ex, and
BioShock was the actual door code for the
Cambridge offices of Looking Glass Studios, the developer
of the original System Shock.
|
Polygon
|
|
The physics glitch in
The Elder Scrolls V: Skyrim that causes giants
tolaunch players into the stratosphere when hitting
themwith a club was discovered prior to release. Bethesda
developers chose not to patch it because they deemed it
entertaining and consistent with the game's chaotic
nature.
|
PC Gamer
|
|
The second disc of Xenogears shifts abruptly from
standard RPG gameplay to a visual novel format where
characters narrate the events while sitting in a chair.
This drastic change occurred because the team exhausted
their budget and development time, forcing them to
condense the final chapters to ship the game.
|
Kotaku
|
|
In Superman Returns (2006), the protagonist has
no health bar because Superman is invulnerable. Instead,
the game displays a "City Health" meter; the player loses
if Metropolis takes too much collateral damage from enemy
attacks or the player's own reckless actions.
|
GameSpot
|
|
LucasArts developed the iMUSE (Interactive Music Streaming
Engine) system for Monkey Island 2 and
Star Wars: TIE Fighter. The engine allowed MIDI
audio tracks to branch and transition seamlessly between
different arrangements in real-time based on the player's
actions, such as entering a building or starting a
dogfight.
|
The International House of Mojo
|
|
The walking animation for the tripod "Striders" in
Half-Life 2 was modeled directly after the gait
of a giraffe. Valve animators studied footage of giraffes
running to ensure the alien bio-mechanical movement felt
grounded and physically plausible.
|
Combine OverWiki
|
|
The Nintendo 64 logo that spins on the screen upon booting
the console is a 3D model composed of exactly 64 faces and
64 vertices.
|
Reddit / Model Analysis
|
|
In Grand Theft Auto: San Andreas, the size of the
map is restricted by the floating-point precision of the
PlayStation 2. If the player travels too far from the
center of the map (coordinates 0,0), the physics engine
begins to degrade, causing the "jittering" effect seen in
aircraft at high altitudes.
|
GTA Wiki
|
|
Assassin's Creed began development as a spinoff
of Prince of Persia titled
Prince of Persia: Assassins. Ubisoft rebranded
the project after deciding that a game focused on an
assassin escorting a prince deviated too significantly
from the core franchise's narrative.
|
Polygon
|
|
The character Kratos in God of War (2005)
originally had blue tattoos. During development, the team
changed the color to red because the blue design looked
too similar to the Barbarian class in Diablo II.
|
PlayStation Blog
|
|
The "Companion Cube" in Portal was originally a
sphere. Playtesters frequently lost the object because it
rolled away from them; Valve changed the shape to a cube
solely to ensure it would stay in place when dropped.
|
Game Informer
|
|
The "Swing Set Glitch" in
Grand Theft Auto IV launches vehicles at high
speeds due to a physics error. The game engine stores
excessive potential energy in the chains when they are
compressed by a vehicle; this energy is released
instantly, catapulting the car.
|
GTA Wiki
|
|
The "Pendant" starting gift in Dark Souls has no
in-game function. Director Hidetaka Miyazaki confirmed he
included the item as a prank to mislead players into
searching for a non-existent secret or gameplay mechanic.
|
Eurogamer
|
|
In Left 4 Dead, the "Witch" enemy's crying sounds
are recordings of a voice actor crying, but slowed down
and pitch-shifted. The team originally experimented with
putting her in a wedding dress, but scrapped the idea for
being too cliché.
|
Left 4 Dead Wiki
|
|
The "Klobb" submachine gun in GoldenEye 007 was
named after Ken Lobb, a Nintendo of America developer. The
team named the gun after him as a joke because it was the
weakest and most inaccurate weapon in the game.
|
Nintendo Life
|
|
The chainsaw sprite in the original Doom (1993)
was digitized from a real McCulloch Eager Beaver chainsaw.
The art team borrowed the tool from Tom Hall's girlfriend
and scanned it from multiple angles to create the in-game
frames.
|
Doom Wiki
|
|
In the original Street Fighter II, players could
not select the same character (e.g., Ryu vs. Ryu) because
the game code did not support palette swapping. This
feature was added in the Champion Edition update
to allow distinct colors for identical sprites.
|
Street Fighter Wiki
|
|
The laugh of the Boos in Super Mario 64 is a
pitch-shifted recording of Bowser's laugh. The developers
sped up the audio clip to create the high-pitched cackle
used for the ghosts.
|
Supper Mario Broth
|
|
The map layout of Midwich Elementary School in the
original Silent Hill is based on the floor plan
of the school from the 1990 film
Kindergarten Cop.
|
Destructoid
|
|
In Metal Gear Solid 4, the installation screens
feature Solid Snake smoking a cigarette. The behavior of
the smoke is interactive; it reacts to the motion sensors
in the PlayStation 3 controller, drifting in the direction
the player tilts the gamepad.
|
Metal Gear Wiki
|
|
The "Circus of Values" vending machines in
BioShock are voiced by the game's creative
director, Ken Levine. He recorded the lines as a
placeholder, but the team decided to keep his performance
in the final game.
|
BioShock Wiki
|
|
The E3 2003 demo for Halo 2 featured a fully
scripted graphics engine that was distinct from the actual
game code. The engine used for the demo could not run the
full game, forcing Bungie to discard the demo assets and
rebuild the campaign engine, leading to significant
content cuts.
|
Eurogamer
|
|
The "door opening" animations in the original
Resident Evil were necessary to mask loading
times on the PlayStation hardware. In the GameCube remake,
the hardware could load rooms instantly, but the
developers retained the animations to maintain the game's
pacing and tension.
|
IGN
|
|
The white towers that appear during the PlayStation 2 boot
sequence represent the save data on the memory card. The
columns grow in height and number as the player creates
more save files.
|
Business Insider
|
|
The ambient menu music of the Nintendo GameCube is
actually the startup jingle of the Famicom Disk System
slowed down by 16 times.
|
IGN
|
|
The theme song for Civilization IV, titled "Baba
Yetu," was the first piece of video game music to win a
Grammy Award. It won for Best Instrumental Arrangement
Accompanying Vocalist(s) in 2011.
|
Guinness Records
|
|
Scott Cawthon created Five Nights at Freddy's
after his previous game,
Chipper & Sons Lumber Co., was criticized for
having characters that moved like "creepy animatronics."
He leaned into the criticism to create a horror franchise.
|
Polygon
|
|
Pac-Man was originally titled Puck-Man.
Namco changed the name for the North American release due
to concerns that vandals would scratch the "P" on arcade
cabinets to look like an "F".
|
Wired
|
|
Nintendo named their mascot "Mario" after Mario Segale,
the landlord of their American warehouse. He had
interrupted a company meeting to demand overdue rent,
prompting the team to name the character Jumpman after
him.
|
NPR
|
|
Before entering the video game industry, Nintendo
experimented with various business ventures in the 1960s,
including a taxi service, instant rice, vacuum cleaners,
and "love hotels."
|
Kotaku
|
|
In Tomb Raider II, players could lock the butler,
Winston, inside the mansion's walk-in freezer. He would
shiver and turn blue, but the developers never programmed
a way for him to escape.
|
IGN
|
|
The reflection seen on the Metal Mario trophy (and others)
in Super Smash Bros. Melee is not a game
environment, but a texture map of a real-world Japanese
kitchen, likely from the studio where the game was
developed.
|
Supper Mario Broth
|
|
Shigeru Miyamoto drew inspiration for the
Star Fox
series from the Fushimi Inari-taisha shrine in Kyoto. The
shrine is famous for its thousands of torii gates, which
inspired the game's arches, and its fox statues.
|
Iwata Asks
|
|
Mega Man is blue because the NES hardware had a limited
color palette. Blue offered the widest range of shades
(cyan, light blue, dark blue), allowing the artists to add
more detail to the sprite than other colors permitted.
|
Polygon
|
|
Rhydon was the first Pokémon ever designed and
programmed into the game data. This is why Rhydon statues
appear frequently in the gyms throughout the original
Red and Blue games.
|
Game Informer
|
|
The falsetto "Toasty!" line heard in
Mortal Kombat is the voice of sound designer Dan
Forden. His face appears in the corner of the screen
briefly when the line is played.
|
Polygon
|
|
The alien ambient background noise on the original Xbox
dashboard consists of altered audio recordings of actual
NASA transmissions from the Apollo missions.
|
Engadget
|
|
The rumor of a secret boss named "Shen Long" in
Street Fighter II stemmed from a mistranslation
of Ryu's victory quote: "You must defeat Sheng Long to
stand a chance." "Sheng Long" was a misreading of
"Shoryuken" (Dragon Punch), but the myth was so popular
Capcom later created Gouken to fit the lore.
|
Capcom
|
|
The Game Boy that survived a barracks bombing in the
1990–1991 Gulf War is still functional. It is currently on
display at the Nintendo NY store in Rockefeller Center,
continuously running Tetris.
|
Nintendo Life
|
|
In Super Mario World, Mario is not pointing
forward when Yoshi extends his tongue. Shigeru Miyamoto
confirmed that the original animation depicts Mario
punching Yoshi in the back of the head to force the tongue
out.
|
IGN
|
|
The Dreamcast Fishing Controller contains motion
sensors that make it compatible with the fighting game
SoulCalibur. Players can swing the rod to execute
sword attacks.
|
GameSpot
|
|
Fallout was originally developed as a licensed
game based on the GURPS tabletop RPG system. The
license was revoked late in development due to the game's
violence, forcing the developers to create the
S.P.E.C.I.A.L. system from scratch.
|
PC Gamer
|
|
The voice of the bizarre fish creature in the Dreamcast
game Seaman was provided by Leonard Nimoy (Spock
from Star Trek), who recorded the narration
shortly before the game's release.
|
Eurogamer
|
|
In Metal Gear Solid 3: Snake Eater, if the player
kills the young Ocelot, the game ends instantly with the
message "Time Paradox," because Ocelot is required to be
alive for the events of the later games in the series.
|
Metal Gear Wiki
|
|
The "Deep Jungle" world from
Kingdom Hearts (based on Tarzan) never
appeared in subsequent games because the rights to the
property reverted to the estate of Edgar Rice Burroughs,
which refused to license it again.
|
CBR
|
|
The manual mechanic in
Tony Hawk's Pro Skater 2 was added because
professional skater Rodney Mullen played a pre-release
build and told the developers the game felt "broken"
without the ability to link tricks on flat ground.
|
Jenkem Magazine
|
|
The distinct high-pitched whine of Sam Fisher's night
vision goggles in Splinter Cell is a recording of
the camera flash capacitor charging on a disposable
camera.
|
Splinter Cell Wiki
|
|
The Legend of Zelda: Link's Awakening was heavily
inspired by the TV show Twin Peaks. Director
Takashi Tezuka wanted to create a "suspicious" atmosphere
with a small cast of eccentric characters in a mysterious
town.
|
Iwata Asks
|
|
The PlayStation controller symbols were designed with
specific meanings: Circle and Cross represented "Yes" and
"No" (common in Japan), Triangle represented a viewpoint
or head, and Square represented a piece of paper or menu.
|
Kotaku
|
|
Programmer Jacques Servin was fired from Maxis after he
secretly inserted code into SimCopter that caused
shirtless men in swimming trunks (called "hunks") to spawn
in massive numbers on specific dates and kiss each other.
|
Snopes
|
|
Upon seeing the violence in GoldenEye 007,
Shigeru Miyamoto suggested that the game should end with
James Bond visiting all the enemies he shot in the
hospital to show they were just actors.
|
The Guardian
|
|
The original Witcher game (2007) was built using
a heavily modified version of BioWare's Aurora Engine,
which was originally designed for the 2002 game
Neverwinter Nights.
|
Eurogamer
|
|
Pikmin originated from a technical demo called
"Super Mario 128," which was designed to test the
GameCube's ability to display over 100 independent AI
characters on screen simultaneously.
|
IGN
|
|
The wooden shield in Bloodborne is intentionally
useless. Its item description mocks players who rely on
blocking (common in Dark Souls), stating that
shields "engender passivity."
|
VG247
|
|
Chex Quest, a game distributed in cereal boxes in
1996, is a total conversion mod of Doom. It uses
the same engine and geometry, simply replacing demons with
"Flemoids" and guns with "Zorchers."
|
PC Gamer
|
|
Tetris was the first video game played in space.
Russian cosmonaut Aleksandr Serebrov played it on a Game
Boy during a mission to the Mir space station in 1993.
|
Guinness Records
|
|
In Pokemon Yellow, Pikachu's voice clips are the
only digitized voice acting in the game. To save space,
the sound engine generates the cry by manipulating a
single short recording of the voice actor saying "Pika" at
different speeds and pitches.
|
The Cutting Room Floor
|
|
The "Cow Level" in Diablo II was created because
fans rumored it existed in the first Diablo.
Blizzard denied it for years, then eventually added the
"Secret Cow Level" as an easter egg to honor the community
myth.
|
Diablo Wiki
|
|
The Game Boy that survived a barracks bombing in the
1990–1991 Gulf War is still functional. It was displayed
at the Nintendo NY store in Rockefeller Center for years,
continuously running Tetris despite its melted
chassis.
|
Nintendo Life
|
|
In Super Mario World, Mario is not pointing
forward when Yoshi extends his tongue. Shigeru Miyamoto
confirmed that the original sprite animation depicts Mario
punching Yoshi in the back of the head to force the tongue
out.
|
IGN
|
|
The Sega Dreamcast Fishing Controller contains motion
sensors that make it compatible with the fighting game
SoulCalibur. Players can swing the rod to execute
sword attacks, a feature not listed in the manual.
|
GameSpot
|
|
Fallout was originally developed as a licensed
game based on the GURPS tabletop RPG system. The
license was revoked late in development due to the game's
excessive violence, forcing the developers to create the
S.P.E.C.I.A.L. system from scratch.
|
PC Gamer
|
|
The voice of the human-faced fish in the Dreamcast game
Seaman was provided by Leonard Nimoy (Spock from
Star Trek), who recorded the extensive narration
shortly before the game's release.
|
Eurogamer
|
|
In Metal Gear Solid 3: Snake Eater, if the player
kills the young Ocelot, the game ends instantly with the
unique "Time Paradox" screen because Ocelot is required to
be alive for the events of the later games in the
timeline.
|
Metal Gear Wiki
|
|
The "Deep Jungle" world from
Kingdom Hearts (based on Tarzan) never
appeared in subsequent games because the rights to the
property reverted to the estate of Edgar Rice Burroughs,
which refused to license it again.
|
CBR
|
|
The manual mechanic in
Tony Hawk's Pro Skater 2 was added because
professional skater Rodney Mullen played a pre-release
build and told the developers the game felt "broken"
without the ability to link tricks on flat ground.
|
Jenkem Magazine
|
|
The distinct high-pitched whine of Sam Fisher's night
vision goggles in Splinter Cell is a recording of
the capacitor charging on a disposable camera flash.
|
Splinter Cell Wiki
|
|
The Legend of Zelda: Link's Awakening was heavily
inspired by the TV show Twin Peaks. Director
Takashi Tezuka wanted to create a "suspicious" atmosphere
populated by a small cast of eccentric characters in a
mysterious town.
|
Iwata Asks
|
|
The PlayStation controller symbols were designed with
specific meanings: Circle and Cross represented "Yes" and
"No" (standard in Japan), Triangle represented a viewpoint
or head, and Square represented a piece of paper or menu.
|
Kotaku
|
|
Programmer Jacques Servin was fired from Maxis after he
secretly inserted code into SimCopter that caused
shirtless men in swimming trunks (called "hunks") to spawn
in massive numbers on specific dates and kiss each other.
|
Snopes
|
|
Upon seeing the violence in GoldenEye 007,
Shigeru Miyamoto suggested that the game should end with
James Bond visiting all the enemies he shot in the
hospital to show the player they were just actors.
|
The Guardian
|
|
The original The Witcher game (2007) was built
using a heavily modified version of BioWare's Aurora
Engine, which was originally licensed for the 2002 game
Neverwinter Nights.
|
Eurogamer
|
|
Pikmin originated from a technical demo called
"Super Mario 128," which was designed to test the
GameCube's ability to display over 100 independent AI
characters on screen simultaneously.
|
IGN
|
|
The wooden shield in Bloodborne is intentionally
useless. Its item description mocks players who rely on
blocking (common in Dark Souls), stating that
shields "engender passivity."
|
VG247
|
|
Chex Quest, a game distributed in cereal boxes in
1996, is a total conversion mod of Doom. It uses
the exact same engine and geometry, simply replacing
demons with "Flemoids" and guns with "Zorchers."
|
PC Gamer
|
|
Tetris was the first video game played in space.
Russian cosmonaut Aleksandr Serebrov played it on a Game
Boy during a mission to the Mir space station in 1993.
|
Guinness Records
|
|
In Pokemon Yellow, Pikachu's voice clips are the
only digitized voice acting in the game. To save cartridge
space, the sound engine generates the cry by manipulating
a single short recording of the voice actor saying "Pika"
at different speeds and pitches.
|
The Cutting Room Floor
|
|
The "Cow Level" in Diablo II was created because
fans rumored it existed in the first Diablo.
Blizzard denied it for years, then eventually added the
"Secret Cow Level" as an easter egg to honor the community
myth.
|
Diablo Wiki
|
|
Warcraft: Orcs & Humans was originally intended
to be a licensed Warhammer game. When Games
Workshop declined the partnership, Blizzard retooled the
art assets and lore to create their own fantasy universe.
|
Kotaku
|
|
The screeching sound made by the Ghasts in
Minecraft is actually an audio recording of music
producer C418's cat, which he accidentally disturbed while
it was sleeping.
|
Reddit (AMA)
|
|
In the Pokémon Red and Blue beta, the poison-type
Pokémon Koffing and Weezing were named "Ny" and "La."
These names were a reference to the heavy smog and
pollution found in New York and Los Angeles.
|
The Cutting Room Floor
|
|
Lara Croft's iconic ponytail is missing in the original
Tomb Raider (1996). It was present in the beta,
but the physics engine caused the hair to glitch and clip
through her head, so developers cut it for the final
release.
|
IGN
|
|
The map screen in The Elder Scrolls V: Skyrim is
not a pre-rendered image. It is the actual 3D game world
with the camera zoomed out and the level-of-detail (LOD)
settings maxed out to render the terrain from a high
altitude.
|
Game Informer
|
|
The "Tallboys" in Dishonored were originally
designed as street lamp lighters. The developers liked the
stilt-walker design so much that they repurposed them into
the terrifying armored city guards seen in the final game.
|
PC Gamer
|
|
In Goat Simulator, the ladder climbing animation
shows the goat stiffly levitating upwards. This was not a
stylistic choice but a result of the developer failing to
program a quadruped climbing animation, so they left the
broken physics in.
|
Gamasutra
|
|
The character Dan Hibiki in
Street Fighter Alpha was created as a parody of
Ryo Sakazaki and Robert Garcia from SNK's
Art of Fighting. His gi, hairstyle, and
exaggerated taunts mock the rival company's design tropes.
|
Street Fighter Wiki
|
|
The 9-hole golf course in Wii Sports is not an
original design. It is a 3D recreation of the courses from
the 1984 NES game Golf, originally programmed by
Satoru Iwata.
|
Iwata Asks
|
|
The recipe for the cake in Portal, which is
recited by the GLaDOS intelligence core, contains
"fish-shaped crackers," "sediment-shaped sediment," and
"an entry called 'how to kill someone with your bare
hands'."
|
Portal Wiki
|
|
The bread in Yakuza: Like a Dragon is rendered
with a custom shader and an exceptionally high polygon
count. The director was dissatisfied with how food looked
in previous games and demanded hyper-realistic bread
physics.
|
Automaton Media
|
|
In Grand Theft Auto V, the GPS signal on the
minimap disappears when the player enters a tunnel. This
is not a loading error, but a programmed detail mimicking
real-world satellite signal loss.
|
IGN
|
|
The "Fission Mailed" screen in
Metal Gear Solid 2 is a fake game-over screen
that appears during the simulation glitch sequence. The
game remains playable in a small window in the corner
while the fake error is displayed.
|
Metal Gear Wiki
|
|
The "Devil Trigger" mechanic in
Devil May Cry originated from a bug in
Onimusha: Warlords. During testing, enemies would
occasionally juggle players in the air indefinitely;
designers liked the aerial combat and evolved it into
DMC.
|
1UP / EGM
|
|
Toriel, the motherly figure in Undertale, is
named after the word "Tutorial," as her primary role in
the game is to guide the player through the game's
mechanics in the Ruins.
|
Undertale Wiki
|
|
In Halo 3, the faces of the developers are hidden
on the underside of the "Monkey People" easter egg found
in the Sierra 117 level. The low-poly cavemen models use
photos of Bungie staff for textures.
|
Halo Wiki
|
|
The walking sound in Among Us is a recording of
the developer, Marcus Bromander, walking on the back of a
canvas painting.
|
Twitter
|
|
The "Creeper" face in Minecraft can be seen in
the sandstone texture of the hieroglyphs. This was an
intentional texture edit by Notch to embed the game's
mascot into the ancient block design.
|
Minecraft Wiki
|
|
To defeat Psycho Mantis in Metal Gear Solid,
players are often required to physically unplug their
controller and insert it into the second controller port.
This prevents the boss from "reading" the player's inputs
and dodging every attack.
|
IGN
|
|
The Xbox was originally named the "DirectX Box" because
the console was built using Microsoft's DirectX graphics
technology. The marketing team shortened the name after
focus groups initially rejected the full title.
|
IGN
|
|
The turrets in Portal do not fire bullets in a
traditional sense. Instead, they use a spring mechanism to
launch the entire cartridge—casing and projectile
together—resulting in "65% more bullet per bullet."
|
Game Informer
|
|
In Far Cry 4, the player can beat the game in
roughly 15 minutes by simply waiting at the dinner table
during the opening sequence. If the player does not flee,
the antagonist Pagan Min returns and grants a peaceful
ending.
|
Eurogamer
|
|
As the narrative of Spec Ops: The Line becomes
progressively darker, the loading screen tips transition
from standard gameplay advice to accusatory statements
directed at the player, such as "Do you feel like a hero
yet?"
|
Polygon
|
|
In the original Half-Life, rapidly pressing the
"Use" key on the microwave in the break room causes the
casserole inside to explode. This action kills the nearby
scientist, who remarks, "My God, what are you doing?"
|
PC Gamer
|
|
The urban legend that Atari buried thousands of unsold
E.T. the Extra-Terrestrial cartridges in a New
Mexico landfill was proven true in 2014. An excavation
team unearthed the games, confirming the 1983 disposal.
|
BBC News
|
|
The Sony PlayStation began development as a CD-ROM add-on
for the Super Nintendo. When Nintendo publicly broke the
partnership to work with Philips, Sony executives decided
to develop the hardware as a standalone console.
|
The Verge
|
|
Due to licensing restrictions, Disney allowed Mickey Mouse
to appear in only one scene in the original
Kingdom Hearts. To work around this, developers
displayed his silhouette in the distance for that single
scene.
|
IGN
|
|
The Goombas in Super Mario Bros. were the last
enemy added to the game. Developers included them because
playtesters found the Koopa Troopas too difficult to
defeat in the first level, requiring a simpler enemy.
|
Iwata Asks
|
|
The Sega Dreamcast logo is orange in Japan and North
America, but blue in Europe. This change was made to avoid
a trademark dispute with the German video game publisher
Tivola, which used a similar orange swirl.
|
GameSpot
|
|
L.A. Noire utilized "MotionScan" technology,
which used 32 cameras to capture an actor's facial
performance from every angle. This resulted in highly
realistic faces but meant developers could not edit the
facial animations by hand.
|
The Guardian
|
|
The Warthog in Halo: Combat Evolved features
four-wheel steering. This functionality originated from a
bug in the physics code, but Bungie developers decided to
keep it because it made the vehicle more maneuverable and
fun to drive.
|
Eurogamer
|
|
The iconic voice of Scorpion shouting "Get Over Here!" in
Mortal Kombat is provided by the game's
co-creator, Ed Boon. He has voiced the character in almost
every iteration of the franchise since 1992.
|
Polygon
|
|
Castlevania: Symphony of the Night features an
"Inverted Castle" that serves as the second half of the
game. Developers added this by flipping the existing map
assets upside down, effectively doubling the game's length
without creating new geometry.
|
Eurogamer
|