The BIG List of Video Game Randomizers

Exhaustive list of all known video game randomizers.

Last revision: 2022-11-20

New randomizers

This subset only shows recently added entries from the past 3 months, with the most recent ones on top, with the exclusion of obsolete ones.

Grandia HD Remaster (Etsuna's)
Quest for Glory I: So You Want to Be a Hero (EGA) (Rainault's)
Super Mario World / Pokémon Red Version (international) / Pokémon Blue Version (international) / Hylics 2 / Overcooked! 2 / Zillion (added to Archipelago)
The Elder Scrolls III: Morrowind (DRIP)
Alundra (Dinopony's)
An Untitled Story (Mokesmoe's) - Support available on the ESA Randomizer Discord server
Blasphemous (Item and Enemy Randomizer)
Chibi-Robo! (JBDdev's)
Deltarune (SURVEY_PROGRAM) (Deltarando) - Discord account required - Can be found in the #resources channel - Randomizes Chapter 1
Deltarune (Chapter 1&2) (Chapter 2 Encounter Randomizer) - Randomizes Chapter 2
Shin Megami Tensei (spannerisms's)
Ultima IV: Quest of the Avatar (PC) (Fenyx4's)
Mario & Luigi: Superstar Saga (jamesbrq's) - Discord account required - Can be found in the #downloads channel
Metroid Prime Hunters (toiletman74's)
Pokémon FireRed Speedchoice (hack) (Official) - Included in hack release
Pokémon Emerald Speedchoice (hack) (Official) - Included in hack release
Pokémon Emerald EX Speedchoice (hack) (Official) - Included in hack release
S.T.A.L.K.E.R.: Shadow of Chernobyl (Simple Randomizer)
Shivers (GodlFire's) - Located under Tools - Source code
Tunic (SilentDestroyer's)
Wolfenstein 3D / Spear of Destiny / Super 3D Noah's Ark (OBSIDIAN)
Final Fantasy VI (Beyond Chaos CE)
Final Fantasy VI (pixel remaster) (Kefka Rush)
Final Fantasy X/X-2 HD Remaster (Final Fantasy X HD Randomizer Pack)
Pikmin 2 (kurumizome's)
Pokémon Crystal Version / Pokémon Crystal Speedchoice (hack) (Map Randomizer)
Pokémon Gen IV remakes / Gen V secondary (Map Randomizer)
Metroid Dread (Randovania) - Source code
Pokémon Gen III upper / Pokémon White Version 2 (Universal Map/Warp Randomizer) - Discord account required - Can be found in the #🖥-mod-downloads channel
Golden Sun: The Lost Age (Karanum's)
Pokémon Emerald Version (Pokemon Emerald Rogue)
Pokémon Gen VIII remakes (Imposter's Ordeal) - Modding tool with bundled randomizer
The Final Fantasy Legend (eclipseyy's)
The Legend of Zelda: A Link Between Worlds (Rick Fay's)
The Legend of Zelda: Link's Awakening (Nintendo Switch) (Owen-Splat's)
Vagrant Story (ChaoticBrave's)

For older changes, you may consult the full changelog.

All randomizers

ActRaiser

ActRaiser (Osteoclave's)

Adventure Island

Adventure Island II (Micheil Skeens's)
Super Adventure Island II (abyssonym's)

Aerobiz

Aerobiz Supersonic (AeroBonkers)

Alundra

Alundra (Dinopony's)

America's Army

America's Army (Weapon Randomizer)

An Untitled Story

An Untitled Story (Mokesmoe's) - Support available on the ESA Randomizer Discord server

Atlantis no Nazo

Gensôkyô no Nazo (fangame) (Ryason55's)

Axiom Verge

Axiom Verge (Pozzum's) - Version 0.6.2.1 also contained an unbalanced monster randomizer - OBSOLETE

Azure Dreams

Azure Dreams (pro_grammar's)
Azure Dreams (Game Boy Color) (pro_grammar's)

Baldur's Gate

Baldur's Gate / Baldur's Gate: Enhanced Edition / Baldur's Gate II: Shadows of Amn / Baldur's Gate II: Enhanced Edition / Baldur's Gate: Enhanced Edition Trilogy (mod) (Enemy Randomizer)
Baldur's Gate / Baldur's Gate: Enhanced Edition / Baldur's Gate II: Shadows of Amn / Baldur's Gate II: Enhanced Edition / EasyTutu (mod) / Baldur's Gate Trilogy (mod) / Baldur's Gate: Enhanced Edition Trilogy (mod) (Item Randomiser)
Baldur's Gate / Baldur's Gate: Enhanced Edition / Baldur's Gate II: Shadows of Amn / Baldur's Gate II: Enhanced Edition / EasyTutu (mod) / Baldur's Gate Trilogy (mod) / Baldur's Gate: Enhanced Edition Trilogy (mod) (Sword Coast Stratagems) - Mod collection that can randomize the maze in Watcher's Keep for Baldur's Gate II
Baldur's Gate II: Shadows of Amn (Improved Anvil)
Baldur's Gate II: Enhanced Edition (Improved Anvil Enhanced Edition)

Banjo-Kazooie

Banjo-Kazooie (Giant Jigglypuff's)

Blade of Darkness

Blade of Darkness (Gorentity Mod with Random Enemy Creator)
Blade of Darkness (Metal Mod)

Blasphemous

Blasphemous (Item and Enemy Randomizer)

Blaster Master

Blaster Master (Quantam's)

Blood

Blood - See at end of list: Multi-series, Other

Bloodborne

Bloodborne (Enemy and Item Randomizer)

Bloodstained

Bloodstained: Ritual of the Night (Randomization Generator)
Bloodstained: Ritual of the Night (Randomizer Tweaks and True Randomization Script)

Borderlands

Borderlands 2 / Borderlands: The Pre-Sequel (BLCMods) - Mod repository containing multiple randomizers
Borderlands 2 (shadowevil1996's Gun and Item Randomizer) - OBSOLETE
Borderlands: The Pre-Sequel (Turk's Gun Randomizer) - OBSOLETE

Bravely

Bravely Default / Bravely Second: End Layer (MarvinXLII's)
Bravely Default II (MarvinXLII's)

Breath of Fire

Breath of Fire II (Painsong)
Breath of Fire III (The Vast and the Violent)

Broforce

Broforce (Alex Neargarder's)

Captain Comic

The Adventures of Captain Comic (David Fifield's)

Castlevania

Classic

Castlevania II: Simon's Quest (BloodSweatAndCode's)
Castlevania II: Simon's Quest (Deadly Curse)
Castlevania III: Dracula's Curse (Micheil Skeens's)
Super Castlevania IV (RedGuy's)

Metroidvania

Castlevania: Symphony of the Night (Relic Randomizer) - Requires Python 2 and PS1 2352 image EDC/ECC recalculator - Game data to patch should be named Castlevania - Symphony of the Night (USA) (Track 1).bin - OBSOLETE
Castlevania: Symphony of the Night (Wild Mouse's)
Castlevania: Circle of the Moon (calm-palm's)
Castlevania: Harmony of Dissonance (fusecv's)
Castlevania: Aria of Sorrow (Item Randomizer)
Castlevania: Aria of Sorrow (Randomizer 2)
Castlevania: Dawn of Sorrow / Castlevania: Portrait of Ruin / Castlevania: Order of Ecclesia (DSVania Randomizer)

Cave Story

Cave Story / Cave Story+ - See at end of list: Multi-series, Connected worlds
Cave Story / Cave Story+ (shru's) - OBSOLETE
Cave Story (Doukutsu Randamu)

Celeste

Celeste (rhelmot's)

Chex Quest

Chex Quest / Chex Quest 3 (fangame) - See at end of list: Multi-series, id Software engines

Chibi-Robo!

Chibi-Robo! (JBDdev's)

Chrono

Chrono Trigger (Eternal Nightmare)
Chrono Trigger (Jets of Time)
Chrono Trigger (Wings of Time) - OBSOLETE

Citadel

Citadel (Item Randomiser)

Civilization

Civilization IV (CivFanatics - Map Scripts)
Civilization IV (DragonEmperor's)
Civilization IV (low's)
Civilization IV: Colonization (FaireWeather.py)
Civilization V (Civ Randomizer)
Civilization V (CivFanatics - Map Scripts)
Civilization V (HellBlazers Map Script)
Civilization V (Randomized Uniques)
Civilization V (Steam Workshop - Map Scripts)
Civilization VI (Random Religions)
Civilization VI (CivFanatics - Map Scripts)
Civilization VI (Steam Workshop - Map Scripts) - More
C-evo (fangame) (Sam Trenholme's map_gen)

Clash at Demonhead

Clash at Demonhead (Micheil Skeens's)

Code Vein

Code Vein (Party Randomizer 2) - Description in old standalone version

Commander Keen

Commander Keen: Invasion of the Vorticons (David Gow's)

Contra

Contra (NES) (Azeryn's) - Documentation
Super C (NES) (SpiderDave's)

Crash Bandicoot

Main

Crash Bandicoot / Crash Bandicoot 2: Cortex Strikes Back / Crash Bandicoot: Warped / Crash Twinsanity - See at end of list: Multi-series, Other

Racing

Crash Tag Team Racing (CDRomatron's)
Crash Nitro Kart / Crash Tag Team Racing - See at end of list: Multi-series, Other

Crazy Castle

The Bugs Bunny Crazy Castle (MaximumLance's)

Crusader Kings

Old versions of Paradox Development Studio games are available on Steam as betas. To unlock Crusader Kings II versions prior to 2.8.3.4, refer to this official announcement.

Crusader Kings II (Alternate History and Random Map Generator) - OBSOLETE
Crusader Kings II (Holy Fury Map Generator)

Crystal Project

Crystal Project (LtSquigs's) - OBSOLETE

Crystalis

Crystalis (steve_hacks's)

Darius

Darius Twin (Micheil Skeens's)

Dark Cloud

Dark Cloud (Chest Randomizer) - Requires special emulator PCSX2 v1.4.0
Dark Cloud (Enemy Randomizer) - Requires special emulator PCSX2 v1.4.0
Dark Cloud 2 - Requires special emulator PCSX2 v1.4.0 or v1.6.0 (Chest Randomizer)

Dark Souls

Dark Souls: Prepare to Die Edition / Dark Souls: Remastered (Enemy Randomizer)
Dark Souls: Prepare to Die Edition / Dark Souls: Remastered (Fog Gate Randomizer)
Dark Souls: Prepare to Die Edition / Dark Souls: Remastered (Item Randomizer)
Dark Souls: Prepare to Die Edition / Dark Souls: Remastered (Paramdomizer)
Dark Souls II (Item Location Randomizer for SotFS) - OBSOLETE
Dark Souls II (Item Randomizer REMIX for SotFS)
Dark Souls III (Enemy Randomizer)
Dark Souls III (Fog Gate Randomizer)
Dark Souls III (Irregulator)
Dark Souls III (Item Randomiser and Auto-Equip)
Dark Souls III (Static Item and Enemy Randomizer)
Dark Souls III (StraySouls) - Randomizing bosses may generate unwinnable games - OBSOLETE
Dark Souls III - See at end of list: Multi-series, Connected worlds

Darkest Dungeon

Darkest Dungeon (ddrand)
Darkest Dungeon (TheUnlocked's)

Dead Rising

Dead Rising (DrunkWario's)

Demon's Souls

Demon's Souls (Item Randomiser)

Deus Ex

Deus Ex / Lay D Denton (mod) / GMDX (mod) / Revision (mod) / Vanilla? Madder (mod) / HX (mod) (Die4Ever's)

Diablo

Diablo II (D2 Mod Maker) - Modding tool with bundled randomizer
Diablo II (Sunbeam's) - Support available on Sunbeam's Discord server
Diablo II: Resurrected (Mod generator) - Modding tool with bundled randomizer

Dicey Dungeons

Dicey Dungeons (Random Equipment)

Digimon

Digimon World (meekrhino's)
Digimon World 2 (GlorySeeker's) - Discord account required - Can be found in the #tool-releases channel

Divinity

Divinity: Original Sin 2 (Enemy Randomization) - Also on Steam Workshop
Divinity: Original Sin 2 - Definitive Edition (Enemy Randomization) - Also on Steam Workshop

Dokapon

Dokapon Kingdom (X Kirby's)

Donkey Kong

Classic

Donkey Kong (Randomized Edition)

Country

Donkey Kong Country / Donkey Kong Country 2: Diddy's Kong Quest (DKC Randomizer / DKC Entrance Rando / DKC2 Entrance Randomizer) - Located under ROM Hacks - DKC Randomizer randomizes animal buddies and enemies and requires an NA 1.0 ROM - Partial source code
Donkey Kong Country 3: Dixie Kong's Double Trouble (Pozzum's)
Donkey Kong Country 3: Dixie Kong's Double Trouble - See at end of list: Multi-series, Connected worlds
Donkey Kong 64 (2dos's 2021)
Donkey Kong 64 (Loading Zone Randomizer) - Requires special emulator BizHawk - OBSOLETE

Racing

Diddy Kong Racing (acastelli's) - Located under Randomizer

Doom

Doom (Ultimate) / Doom II / Final Doom / Harmony (fangame) - See at end of list: Multi-series, id Software engines
Doom (Ultimate) / Doom II / Final Doom (Vanilla Doom Plus)
Doom (Ultimate) / Doom II (ORO-RANDOM-DOOM) - OBSOLETE
Doom (Ultimate) / Doom II (SLIGE) - OBSOLETE
Doom (Ultimate) / Doom II (Vandomizer)
Doom II / Final Doom (The Populator)
Doom II (SLUMP) - OBSOLETE
Doom Eternal (Enemy Randomizer)
Doom Eternal (Horde Mode Randomizer)

Double Dragon

Double Dragon II: The Revenge (NES) (Micheil Skeens's)

Dragon Quest

Main

Dragon Quest (Catastrophe's) - OBSOLETE
Dragon Quest (mcgrew's)
Dragon Quest II: Luminaries of the Legendary Line (gameboy9's)
Dragon Quest I&II (Super NES) (gameboy9's)
Dragon Quest III: The Seeds of Salvation (gameboy9's)
Dragon Quest III: The Seeds of Salvation (Super NES) (Heavenly Flight)
Dragon Quest IV: Chapters of the Chosen (RandoHacker)
Dragon Quest VIII: Journey of the Cursed King (Nintendo 3DS) (playinful's)

Monsters

Dragon Quest Monsters 2: Cobi's Journey / Dragon Quest Monsters 2: Tara's Adventure (Bynine's) - OBSOLETE
Dragon Quest Monsters 2: Cobi's Journey / Dragon Quest Monsters 2: Tara's Adventure (TheCowness's)

Dragon's Dogma

Dragon's Dogma: Dark Arisen (Bitterblack Isle Randomizer)

DuckTales

DuckTales (Micheil Skeens's)

Duke Nukem

Duke Nukem 3D (Map Order Randomizer) - OBSOLETE
Duke Nukem 3D - See at end of list: Multi-series, Other

EarthBound

EarthBound Beginnings (Agent Ape's)
EarthBound (Bizarre Dimension) - OBSOLETE
EarthBound (Chaz's)
EarthBound (PK Scramble)
EarthBound (Rydel's Reshuffler) - OBSOLETE
EarthBound (Tomato's Reshuffler) - OBSOLETE
Mother 3 (Lorenzooone's)

Elden Ring

Elden Ring (Item and Param Randomiser)
Elden Ring (Item and Enemy Randomizer)
Elden Ring (Summon Randomizer)

Elemental

Fallen Enchantress (Randomized Monsters)

Ender Lilies

Ender Lilies: Quietus of the Knights (Trexounay's)

Europa Universalis

Old versions of Paradox Development Studio games are available on Steam as betas. To unlock Europa Universalis IV versions prior to 1.27, refer to this official announcement.

Europa Universalis IV (Haftetavenscrap's Realistic Map Generator) - Discussion thread for Paradox Interactive account users
Europa Universalis IV (Randomized World)
Europa Universalis IV (Simple Random World)

Environmental Station Alpha

Environmental Station Alpha (Mokesmoe's) - Located under Tools

Excitebike

Excitebike (gameboy9's)

Fable

Fable - The Lost Chapters (Creature Generator Randomiser)
Fable Anniversary (Creature Generator Randomiser)

Factorio

Factorio (Official Mod Portal - Randomizers)
Factorio - See at end of list: Multi-series, Connected worlds

Fallout

Fallout: New Vegas (NVRNG) - Unofficial debug weapon nerf mod
Fallout: New Vegas (Skill Check Randomizer)
Fallout: New Vegas (World Randomizer)
Fallout 4 (Bobblehead Randomizer)
Fallout 4 (Enemy Weapon Randomizer)
Fallout 4 (Mechtechnal's) - Only mitigates sequence breaking
Fallout 4 (Randomized Enemy Weapons)
Fallout 4 (Weapon Quality Randomizer)

Faxanadu

Faxanadu (Notlob's)

Final Fantasy

Main

Final Fantasy (Deep Dungeon) - OBSOLETE
Final Fantasy (Entroper's)
Final Fantasy - See at end of list: Multi-series, Connected worlds
Final Fantasy (PSP) (gameboy9's)
Final Fantasy (pixel remaster) (gameboy9, leggystarscream & seeliefae's)
Final Fantasy II (Fast Food Tour Randomizer) - Located under FF2
Final Fantasy II (PheonixMMKC777's)
Final Fantasy I & II: Dawn of Souls (Approaching Chaos)
Final Fantasy I & II: Dawn of Souls (HMS Jayne) - Source code - Randomizes Final Fantasy I
Final Fantasy III (Nacho Yacopu's) - If online version does not work, download the code and open index.html
Final Fantasy IV (Beyond Babil)
Final Fantasy IV (Free Enterprise)
Final Fantasy IV (Roguelikeifyer)
Final Fantasy IV (The Lunarian Shuffle)
Final Fantasy IV (pixel remaster) (Fabul Gauntlet)
Final Fantasy V (Ancient Cave) - English translation
Final Fantasy V (Career Day)
Final Fantasy V (Grand Cross)
Final Fantasy V Advance (Ancient Cave)
Final Fantasy V Advance (DarkJDL's) - Discord account required - Can be found in the #randomizerfiles channel
Final Fantasy V Advance (Spicy) - Randomizes job abilities - Mild output is normal randomization, while Extra Spicy output also randomizes job abilities independently between characters - Drag & drop original USA ROM on randomizer.exe to randomize
Final Fantasy V (pixel remaster) (FF5Abridged)
Final Fantasy VI (Beyond Chaos) - OBSOLETE
Final Fantasy VI (Beyond Chaos CE)
Final Fantasy VI (Beyond Chaos EX) - OBSOLETE
Final Fantasy VI / Brave New World (hack) (Beyond Chaos Gaiden)
Final Fantasy VI (Dessyreqt's) - Extract /releases/0/55609bb9-67b8-4ce4-8ff0-4673a618e35f from the archive and rename it to its original file name FinalFantasy6Randomizer.exe to use
Final Fantasy VI (Exit Rando)
Final Fantasy VI (Worlds Collide)
Final Fantasy VI (pixel remaster) (Kefka Rush)
Final Fantasy VII (Godo)
Final Fantasy VIII / Final Fantasy VIII Remastered (Maelstrom)
Final Fantasy IX (Meteor On Final Fantasy IX)
Final Fantasy IX (Stiltzkin's Bag)
Final Fantasy IX (VVs Randomizer)
Final Fantasy X (FFXED) - Save editor that can randomize Sphere Grids
Final Fantasy X/X-2 HD Remaster (Final Fantasy X HD Randomizer Pack)
Final Fantasy X/X-2 HD Remaster (FFX Randomizer)
Final Fantasy X/X-2 HD Remaster (FFX-2 Remaster Randomizer)
Final Fantasy XII The Zodiac Age (Bartz24's)
Final Fantasy XII The Zodiac Age (Open World Randomizer)
Final Fantasy XIII (Steam) (Bartz24's 2020)
Final Fantasy XIII (Steam) / Final Fantasy XIII-2 (Steam) / Lightning Returns: Final Fantasy XIII (Steam) (Bartz24's 2021) - Discord account required to download the required Nova Chrysalia mod manager

Tactics

Final Fantasy Tactics (Rumble Chaos Crashdown) - OBSOLETE
Final Fantasy Tactics (Rumble: Chaos: >>The Crashdown<< REMAKE)
Final Fantasy Tactics Advance (Leonarth's)
Final Fantasy Tactics Advance (TojiKitten's)

Freeway

Freeway (Steve Englehardt's)

Game Dev Tycoon

Game Dev Tycoon (Platform Randomiser) - Also on Steam Workshop

Gato Roboto

Gato Roboto (CaptainDapper's)

Godzilla

Godzilla: Monster of Monsters (MaybeDatapod's)

Golden Sun

Golden Sun (marvin's)
Golden Sun: The Lost Age (Karanum's)
Golden Sun: The Lost Age (marvin's) - OBSOLETE

Golf

Golf (NES) (gameboy9's)
NES Open Tournament Golf (Turbulent Eddie's) - Requires special emulator FCEUX

Goof Troop

Goof Troop (Niamek's)

Grand Theft Auto

Grand Theft Auto: San Andreas (Rainbomizer)

Grandia

Grandia HD Remaster (Etsuna's)

Gratuitous Space Battles

Gratuitous Space Battles (Galaxy generator)

Hacx

Hacx - See at end of list: Multi-series, id Software engines

Hades

Hades (ZebraFish's)

Half-Life

Half-Life (Randmap)

Hearts of Iron

Old versions of Paradox Development Studio games are available on Steam as betas. To unlock Hearts of Iron IV versions prior to 1.5.4, refer to this official announcement.

Hearts of Iron IV (Drowse's)

Hebereke

Ufouria: The Saga (djraondos's)

Heretic

Heretic / Hexen: Beyond Heretic - See at end of list: Multi-series, id Software engines

Hitman

Hitman 3 (2021) (ZHM5Randomizer)

Hollow Knight

Support is available on the official Hollow Knight Discord server in the #randomizer channel.

Hollow Knight (Randomizer 4) - Multiplayer add-on - Mod manager Scarab for easy installation and updates

Homeworld

Homeworld 2 (Capturable Fleets Mod)

Hylics

Hylics 2 - See at end of list: Multi-series, Connected worlds

Ion Fury

Ion Fury - See at end of list: Multi-series, Other

Jade Cocoon

Jade Cocoon: Story of the Tamamayu (Meos's)

James Bond

GoldenEye 007 (K1lo's)

Jet Set Radio

JSRF: Jet Set Radio Future (fusecv's) - Documentation (for older version) - Support and potential future versions available on the JSRF Speedrunning Discord server in the #modding channel

Jetman

Solar Jetman (Niamek's)

Joe & Mac

Joe & Mac: Caveman Ninja (Super NES) (Micheil Skeens's)

Jurrasic Park

Jurrasic Park (Super NES) (Yoshifanatic1's) - Located in video description

Kartia

Kartia: The Word of Fate (Meerkov's)

Keitai Denjû Telefang

Keitai Denjû Telefang: Power Version (Sanqui's) - Source code

Kid Icarus

Kid Icarus (Kid Randomicus) - Source code
Kid Icarus (Rumbleminze & fruitbatsalad's 2019) - OBSOLETE

Kingdom Hearts

Kingdom Hearts HD 1.5 + 2.5 ReMix / Kingdom Hearts II Final Mix (Tommadness & thundrio's) - Randomizes Kingdom Hearts II
Kingdom Hearts HD 1.5 + 2.5 ReMix (Birth-by-Sleep-Randomizer)
Kingdom Hearts HD 1.5 + 2.5 ReMix (KHPCSpeedrunTools) - Mod collection with bundled randomizer
Kingdom Hearts II Final Mix (Door Randomizer)
Kingdom Hearts II Final Mix (Valaxor's)
Kingdom Hearts III (WaterKH's)

Kirby

Kirby's Adventure (Austin Bricker's)
Kirby: Nightmare in Dream Land (Austin Bricker's)
Kirby Super Star (firubii's)
Kirby 64: The Crystal Shards (jesusyoshi54's) - Located in video description
Kirby & The Amazing Mirror (HeyImTG's)
Kirby & The Amazing Mirror (Mips96's)
Kirby Star Allies (firubii's)
Kirby and the Forgotten Land (Toranix's)

La-Mulana

La-Mulana (fangame) (progre's)
La-Mulana (2011 remake) (thezerothcat's)
La-Mulana 2 (Coookie93's)

Landstalker

Landstalker: The Treasures of King Nole (Randstalker)

Left 4 Dead

Left 4 Dead 2 (Map Generator)

Legacy of the Wizard

Legacy of the Wizard (LadyStarbird's)

Legend of Grimrock

Legend of Grimrock 2 (7Soul's)

Lisa

Lisa: The Pointless (fangame) (TrueCobalion's)

Lizard

Lizard (Official)

Lost Kingdoms

Lost Kingdoms (Benjamin Wolf's)

Lufia

Lufia II: Rise of the Sinistrals (Terror Wave)

Mana

Secret of Mana (Mop's)
Sin of Mana (Trials of Mana hack) (praetarius5018's) - Randomizer listed as separate download along with previous versions of the main hack

Mario

Platformers

Super Mario Bros. (Level-Headed)
Super Mario Bros. 2 (Door Randomizer)
Super Mario Bros. 2 (MaCobra52's)
Super Mario Bros. 2 (tetraly's)
Super Mario Bros. 3 (Fred Coughlin's)
Super Mario Bros. 3 (Route Randomizer) - OBSOLETE
Super Mario Bros. 3 (ssjtroly's)
Super Mario World / Super Mario 64 - See at end of list: Multi-series, Connected worlds
Super Mario World (authorblues's)
Super Mario Land 2: 6 Golden Coins / Super Mario Land 2 DX (hack) (dadinfinitum's)
Super Mario 64 (aGlitch's)
Super Mario 64 (Andre Meyer's)
Super Mario 64 (Arthurtilly's)
New Super Mario Bros. Wii (HBroHei's)

Racing

Mario Kart 64 (Seohaine's)

RPGs

Super Mario RPG: Legend of the Seven Stars (Gentle Beauty and Raw Power) - OBSOLETE
Super Mario RPG: Legend of the Seven Stars (Open World)
Paper Mario (Black Pit) - Located in video description
Paper Mario (Icebound777's)
Paper Mario: The Thousand-Year Door (Infinite Pit)
Paper Mario: The Thousand-Year Door (Shufflizer)
Paper Mario: The Thousand-Year Door (Zephiles's Enemy HP and Item Drops Randomizers) - Requires a cheat engine supporting Gecko codes
Paper Mario: The Thousand-Year Door (Zephiles's Item and Loading Zones Randomizers) - Located under Tools as Miscellaneous Cheat Codes
Super Paper Mario (Level Editor and Randomizer)
Mario & Luigi: Superstar Saga (jamesbrq's) - Discord account required - Can be found in the #downloads channel

Mass Effect

Mass Effect 2 (ME3Tweaks's)

Medabots

Medabots: Metabee / Medabots: Rokusho (STulling's)

Mega Man

Classic

Mega Man 2 (duckfist's) - OBSOLETE
Mega Man 2 (Randomizer 2)
Mega Man 2 (Endless)
Mega Man 3 / Mega Man 4 / Mega Man 5 (Endless) - Located under ハック as ロックマン3 エンドレス for Mega Man 3, ロックマン4 エンドレス for Mega Man 4 and ロックマン5 エンドレス for Mega Man 5
Mega Man 4 (NBoroKobo's) - Randomizes enemies and items - Located under ロックマン4 as ロックマン4ランダマイザー
Mega Man 6 (Raidenthequick's Weapon Randomizer)
Mega Man 7 (Endless / Rainbow Session Randomizer) - Located under ロックマン7
Mega Man: The Wily Wars (MaximumLance's)

X

Mega Man X (TokyoScarab's)
Mega Man X3 / Zero Project (hack) (Item Randomizer)

Battle Network

Mega Man Battle Network 2 (Network Customizer)
Mega Man Battle Network 3: Blue Version / Mega Man Battle Network 3: White Version (X Kirby's)
Mega Man Battle Network 3: White Version (samfin's) - OBSOLETE
Mega Man Battle Network 5: Team Protoman / Mega Man Battle Network 5: Team Colonel / Mega Man Battle Network 6: Cybeast Falzar / Mega Man Battle Network 6: Cybeast Gregar (Prof. 9's)
Mega Man Battle Chip Challenge (GBA) (Sam Donow's)

Unofficial

Rockman 3: Winternight (Mega Man 3 hack) (Endless Version)

Meritous

Meritous - See at end of list: Multi-series, Connected worlds

Metal Gear

Metal Gear (Objects)

Metroid

Main

Metroid / Super Metroid - See at end of list: Multi-series, Connected worlds
Metroid (Metrandomizer)
Metroid (Nestroid Randomizer)
Metroid (Netsrotti's) - OBSOLETE
Metroid (Planets) - Fan recreation with bundled randomizer
Metroid: Zero Mission (biospark's)
Metroid II: Return of Samus (liamnajor's)
Super Metroid (Arcade)
Super Metroid (DASH)
Super Metroid (Dessyreqt's) - OBSOLETE
Super Metroid (Door Randomizer) - Extract /releases/1/a60245ee-c346-4473-9cc9-2f19ae1e1095 from the archive and rename it to its original file name SuperMetroidDoor0.3a.rar to use
Super Metroid (Item Randomizer) - OBSOLETE
Super Metroid (Item Randomizer Multiworld)
Super Metroid (Route Randomizer)
Super Metroid (VARIA) - Conversion tool to randomize Rotation (Super Metroid hack)
Super Metroid (World Randomizer)
Metroid Fusion (MFOR)

Prime

Metroid Prime / Metroid Prime 2: Echoes - See at end of list: Multi-series, Connected worlds
Metroid Prime (BashPrime's) - OBSOLETE
Metroid Prime (Metroid Prime Seed Generator) - Requires Claris's Randomizer v3.2 which may generate unwinnable games by itself - OBSOLETE
Metroid Prime 3: Corruption (gollop's) - Discord account required - Can be found in the #corruption-general channel
Metroid Prime Hunters (toiletman74's)

Unofficial

AM2R (fangame) (Community Updates) - Fan updates with randomizer in pinned post - Unlock Random Game+ by either beating the game under 4 hours on Normal or Hard difficulty, or by entering cheat code [UP][UP][DOWN][DOWN][LEFT][RIGHT][LEFT][RIGHT][ACCEPT][BACK] on the game selection screen - Options documented in explanations.txt
Metroid The Threat Never Ends (fangame) (DodoBirby's)
Hyper Metroid (Super Metroid hack) (Item Randomizer)
Project Base (Super Metroid hack) (Item Randomizer)
Z-Factor (Super Metroid hack) (Item Randomizer)

Milon

Milon's Secret Castle (Micheil Skeens's)

Minecraft

Old versions of Minecraft: Java Edition are available on Mojang's website, although note that such versions may contain critical security vulnerabilities. Direct download links can be found on MCVersions for convenience.

Minecraft: Java Edition (Fasguy's Minecraft Toolbox)
Minecraft: Java Edition (Loot Table Randomizer) - Located in video description - Requires Python 3 - OBSOLETE
Minecraft: Java Edition (MotzlMotzt's) - OBSOLETE
Minecraft: Java Edition - See at end of list: Multi-series, Connected worlds

Monster Hunter

Monster Hunter: World (Kana Miyoshi's)
Monster Hunter: World (Randomizer Quests)

Monster Party

Monster Party (Micheil Skeens's)

Monster Rancher

Monster Rancher 2 (Seasonal Shrine)

Necropolis

Necropolis (Weapon Randomizer)

Need for Speed

The Need for Speed (RandTrack)
Need for Speed Carbon (RaTT's) - Requires NFS-VltEd

Neutopia

Neutopia (konkers's)

Ninja Gaiden

Ninja Gaiden (NES) (Micheil Skeens's)

Noita

Noita (Steam Workshop - Randomizers)

Octopath Traveler

Octopath Traveler (Boss Randomizer)
Octopath Traveler (Job Randomizer)

Ogre

Ogre Battle: The March of the Black Queen (spellzapp's)

Ori

Ori and the Blind Forest: Definitive Edition (sigmasin & Eiko's) - Source code
Ori and the Will of the Wisps (Eiko's) - Source code

Overcooked

Overcooked! 2 - See at end of list: Multi-series, Connected worlds

Pac-Man

Pac-Man World 2 (Montra's)

Pathologic

Pathologic 2 (District Randomizer Mod)

Phantasy Star

Phantasy Star II (LadyStarbird's)
Phantasy Star IV: The End of the Millennium (LadyStarbird's 2018)
Phantasy Star IV: The End of the Millennium (Profound Disorder)

Pikmin

Pikmin (Minty-Meeo's)
Pikmin 2 (kurumizome's)

Plants vs. Zombies

PlantsVsZombies.NET (Plants vs. Zombies unofficial PC port) (Andree's) - Requires the Windows Phone version of the game and Visual Studio Community 2019

Pokémon

Core

Speedchoice hacks are available on the Pokemon Crystal Randomizer Central Discord server in the #resources channel.

Gen I / Gen II / Gen III / Gen IV / Gen V / Gen VI / Gen VII classic (Universal Pokemon Randomizer ZX)
Gen I / Gen II / Gen III / Gen IV / Gen V (Universal Pokemon Randomizer) - OBSOLETE
Gen I / Gen II / Gen III / Pokémon Red Speedchoice (hack) / Pokémon Crystal Speedchoice (hack) / Pokémon Emerald Speedchoice (hack) / Pokémon Emerald EX Speedchoice (hack) (Type Chart Randomizer)
Gen I primary (Artemis251's) - OBSOLETE
Gen I primary (Key Item Randomizer)
Gen I primary (RAMdomizer) - OBSOLETE
Gen I primary (Ubuntaur's) - OBSOLETE
Gen I primary - See at end of list: Multi-series, Connected worlds
(Gen I) Pokémon Red Version (international) (Sanqui's) - Source code
(Gen I) Pokémon Red Speedchoice (hack) (Official) - Support and potential future versions available on the Pokemon Crystal Randomizer Central Discord server in the #resources channel - Source code
Gen II / Gen III (pateandrew's) - OBSOLETE
(Gen II) Pokémon Crystal Version / Pokémon Crystal Speedchoice (hack) (Item Randomizer)
(Gen II) Pokémon Crystal Version / Pokémon Crystal Speedchoice (hack) (Map Randomizer)
(Gen II) Pokémon Crystal Version (Randofuser)
(Gen II) Pokémon Crystal Speedchoice (hack) (Key Item Randomizer) - OBSOLETE
(Gen III / Gen IV / Gen V) Gen III upper / Pokémon Emerald Version / Pokémon Platinum Version / Pokémon White Version 2 (Universal Map/Warp Randomizer) - Discord account required - Can be found in the #🖥-mod-downloads channel
Gen III (Reasonable Randomizer)
(Gen III) Pokémon FireRed Speedchoice (hack) (Official) - Included in hack release
(Gen III) Pokémon Emerald Version (Artemis251's) - OBSOLETE
(Gen III) Pokémon Emerald Version (pokeemerald warp randomizer) - Requires decompiled version of original game - OBSOLETE
(Gen III) Pokémon Emerald Version (Pokemon Emerald Rogue)
(Gen III) Pokémon Emerald Speedchoice (hack) (Official) - Included in hack release
(Gen III) Pokémon Emerald EX Speedchoice (hack) (Official) - Included in hack release
Gen IV remakes / Gen V secondary (Map Randomizer)
(Gen IV) Pokémon Platinum Version (Entrance Randomizer)
Gen VI / Gen VII primary / Gen VII upper (pk3DS) - OBSOLETE
Gen VII remakes / Gen VIII primary (pkNX)
Gen VIII remakes (Imposter's Ordeal) - Modding tool with bundled randomizer
Gen VIII remakes (SanGawku's) - OBSOLETE

Acronyms:

Gen I: Pokémon Red Version (international) / Pokémon Blue Version (international) / Pokémon Yellow Version: Special Pikachu Edition
Gen I primary: Pokémon Red Version (international) / Pokémon Blue Version (international)
Gen II: Pokémon Gold Version / Pokémon Silver Version / Pokémon Crystal Version
Gen III: Pokémon Ruby Version / Pokémon Sapphire Version / Pokémon FireRed Version / Pokémon LeafGreen Version / Pokémon Emerald Version
Gen III upper: Pokémon FireRed Version / Pokémon LeafGreen Version
Gen IV: Pokémon Diamond Version / Pokémon Pearl Version / Pokémon Platinum Version / Pokémon HeartGold Version / Pokémon SoulSilver Version
Gen IV remakes: Pokémon HeartGold Version / Pokémon SoulSilver Version
Gen V: Pokémon Black Version / Pokémon White Version / Pokémon Black Version 2 / Pokémon White Version 2
Gen V secondary: Pokémon Black Version 2 / Pokémon White Version 2
Gen VI: Pokémon X / Pokémon Y / Pokémon Omega Ruby / Pokémon Alpha Sapphire
Gen VII primary: Pokémon Sun / Pokémon Moon
Gen VII upper: Pokémon Ultra Sun / Pokémon Ultra Moon
Gen VII remakes: Pokémon: Let's Go Pikachu! / Pokémon: Let's Go Eevee!
Gen VIII primary: Pokémon Sword / Pokémon Shield
Gen VIII remakes: Pokémon Brillant Diamond / Pokémon Shining Pearl

Side

Pokémon Stadium (Randomizer and Editor)
Pokémon Stadium 2 (RainbowSprinklez's)
Pokémon Stadium 2 (Rental Moveset Randomizer)
Pokémon Colosseum / Pokémon XD: Gale of Darkness (Pokemon NGC Rando)
Pokémon Colosseum / Pokémon XD: Gale of Darkness (Reclaimer Shawn's) - Located in video description - Requires special emulator Dolphin 5.0 Windows x64 stable version - OBSOLETE
Pokémon Colosseum / Pokémon XD: Gale of Darkness (Gale of Darkness Tool + Colosseum Tool) - Source code - OBSOLETE

Mystery Dungeon

Pokémon Mystery Dungeon: Explorers of Sky (mdrngzer)
Pokémon Mystery Dungeon: Explorers of Sky (SkyTemple Randomizer)

Other

Pokémon Trading Card Game (Aroymart's)
Pokémon Trading Card Game (Sanqui's) - Source code
Pokémon Trading Card Game (pokepress's)
Pokémon Trading Card Game (xCrystal's) - OBSOLETE
Pokémon Conquest (RanseiLink) - Game editor with bundled randomizer

Unofficial

Pokémon Gaia Version (Pokémon FireRed Version hack) (Universal Pokémon Randomizer - Pokémon Gaia Fork)
Pokémon Rejuvenation (fangame) (Challenge Pack)

PowerSlave

PowerSlave - See at end of list: Multi-series, Other

Prey

Prey (2017) (Tsundereployer's)

Project Wingman

Project Wingman (FalconLuma's) - Requires Project Sicario Merger

Punch-Out!!

Mike Tyson's Punch-Out!! (authorblues's)

Quake

Quake / Quake II - See at end of list: Multi-series, id Software engines
Quake (RandoQ)
Quake II (Campaign Randomizer)

Quest

Quest 64 (Merrow)

Quest for Glory

Quest for Glory I: So You Want to Be a Hero (EGA) (Rainault's)

Rabi-Ribi

Rabi-Ribi (wcko87's)

Rad Racer

Rad Racer (gameboy9's)

Raft

Raft - See at end of list: Multi-series, Connected worlds

Rayman

Rayman 3: Hoodlum Havoc - See at end of list: Multi-series, Other

Resident Evil

Resident Evil (MediaKite) (re_duke's) - Requires Classic REbirth
Resident Evil HD Remaster (Benn Powell's)
Resident Evil 2 (Sourcenext) (BIO2 RNDX) - Run with the /L command line argument for Leon
Resident Evil 2 (Sourcenext) (Claire A - Leon B) - Requires Classic REbirth
Resident Evil 2 (2019) (Benn Powell's)
Resident Evil 3: Nemesis (PS Resident Evil 3 Tool) - Trainer that can randomize items - Located in video description
Resident Evil 3: Nemesis (Sourcenext) (New RE3 Randomizer) - Requires Classic REbirth
Resident Evil 3: Nemesis (EA Taiwanese) (PyramidK & re_fan_2236's) - Randomizes enemies and items - Discord account required - Can be found in the #💥☢☣downloads channel
Resident Evil 3 (2020) (naitsircNH's)
Resident Evil 4 (Enemy/Merchant Randomizer)
Resident Evil 4 (Rando Items 9000)
Resident Evil 5 (The Mercenaries Randomizer Mod)

Risk of Rain

Risk of Rain 2 - See at end of list: Multi-series, Connected worlds

Rogue Legacy

Rogue Legacy (Phar's)
Rogue Legacy - See at end of list: Multi-series, Connected worlds

RollerCoaster Tycoon

OpenRCT2 (RollerCoaster Tycoon 2 fan recreation) (Die4Ever's)

Rome

Old versions of Paradox Development Studio games are available on Steam as betas.

Imperator: Rome (Shattered World mod generator)

S.T.A.L.K.E.R.

S.T.A.L.K.E.R.: Shadow of Chernobyl (Simple Randomizer)

SaGa

Sailor Moon

Pretty Soldier Sailor Moon (PSSME) - Game editor with bundled randomizer

Salt and Sanctuary

Salt and Sanctuary (coppie's)

Scooby-Doo

Scooby-Doo: Night of 100 Frights - See at end of list: Multi-series, Other

Scourge of War

Scourge of War: Gettysburg (GCM Singleplayer Campaign) - Stripped-down offline version

Secret of Evermore

Secret of Evermore (Evermizer)
Secret of Evermore - See at end of list: Multi-series, Connected worlds

Sekiro: Shadows Die Twice

Sekiro: Shadows Die Twice (Enemy and Item Randomizer)

Sgt. Frog

Keroro RPG: Kishi to Musha to Densetsu no Kaizoku (Dawnbomb's English Patch + Optional Randomizer)

Shadow Warrior

Shadow Warrior - See at end of list: Multi-series, Other

Shin Megami Tensei

Shin Megami Tensei (spannerisms's)
Shin Megami Tensei III: Nocturne (NMarkro's)
Shin Megami Tensei: Strange Journey (Disaster Cycle)

Shining

Shining Force (Join Order Randomizer)
Shining Force II (Scrambled Force II)
Shining Force II (Shining Chaos Prelude)

Shivers

Shivers (GodlFire's) - Located under Tools - Source code

Sifu

Sifu (Randomizer Mod)

Silent Hill

Silent Hill 2 / Silent Hill 3 (Jokie's)
Silent Hill 4: The Room (Hunter Stanton's)

Slaves to Armok: God of Blood

Dwarf Fortress (Random plant creation script)
Dwarf Fortress (Random Raw Scripts)

Slay the Spire

Slay the Spire - See at end of list: Multi-series, Connected worlds

Smash T.V.

Super Smash T.V. (Micheil Skeens's)

Snowboard Kids

Snowboard Kids (Stingerman06's)

Soldier of Fortune

Soldier of Fortune II: Double Helix - Gold Edition (RMG Expansion and SP Tweaks Mod)

Solstice

Solstice (pbandpickle's)

Sonic the Hedgehog

2D

Sonic the Hedgehog (Sega Master System) (ssjtroly's)
Sonic CD (MainMemory's)
Sonic Mania (junglechief87's)

3D

Sonic Adventure DX (Sora's)
Sonic Adventure 2 (Ngolinvaux's)
Sonic Adventure 2 - See at end of list: Multi-series, Connected worlds
Sonic the Hedgehog (2006) (Randomiser Suite)

Unofficial

Sonic Robo Blast 2 (fangame) (SRB2Randomizer)

Soul Blazer

Soul Blazer (RandoBlazer) - Old Windows binaries
Illusion of Gaia (DontBaguMe's)
Terranigma (TerraFluky) - Discord server for support

Spelunky

Spelunky 2 (Dregu's)

SpongeBob SquarePants

SpongeBob SquarePants: Battle for Bikini Bottom / The SpongeBob SquarePants Movie - See at end of list: Multi-series, Other

StarCraft

StarCraft II (Die4Ever's)
StarCraft II - See at end of list: Multi-series, Connected worlds

Star Fox

Star Fox (Peppy's Tool)
Star Fox 64 (punk7890's)

Star Wars

Star Wars Jedi Knight: Jedi Academy (RandomJK)
Star Wars Jedi: Fallen Order (Enemy Randomizer)
Lego Star Wars: The Complete Saga (Viola's) - Discord account required - Can be found in the #downloads channel

Stardew Valley

Stardew Valley (More Random Edition)
Stardew Valley (Queen of Sauce Randomizer)
Stardew Valley (Tooshi's)

State of Decay

State of Decay (Character Randomizer)

SteamWorld

SteamWorld Dig (LiveSplit.SteamWorldDig.Randomizer)
SteamWorld Dig 2 (SWD2Randomizer)

Streets of Rage

Streets of Rage 4 (Swapper)

Strife

Strife - See at end of list: Multi-series, id Software engines

Subnautica

Subnautica (Randomizer Remade)
Subnautica (Stephen England's) - OBSOLETE
Subnautica (Transition Randomiser)
Subnautica - See at end of list: Multi-series, Connected worlds

Super 3D Noah's Ark

Super 3D Noah's Ark - See at end of list: Multi-series, id Software engines

Super Meat Boy

Super Meat Boy (negative-seven)

Super Smash Bros.

Super Smash Bros. Melee (Break the Targets Randomizer)
Super Smash Bros. Melee (drewlith's)
Super Smash Bros. Ultimate (Skelux's)
Super Smash Bros. Ultimate (WoL Randomizer)

System Shock

System Shock 2 (Zygoptera Randomiser)

Tear Ring Saga

Berwick Saga: Lazberia Chronicle Chapter 174 (Editor & Randomizer)

Tecmo Bowl

Tecmo Super Bowl (Salary Cap Random Match)

Teenage Mutant Ninja Turtles

Teenage Mutant Ninja Turtles (NES) (abyssonym's)
Teenage Mutant Ninja Turtles (NES) (kavoc's)

Terraria

Terraria (Chest Randomizer)
Terraria (Flag Randomizer) - Requires tModLoader
Terraria (JamSnack's) - Requires tModLoader

Tetris

Tetris (NES Nintendo) (fridaywitch's) - Overrides normal RNG

The 7th Saga

The 7th Saga (gameboy9's)

The Elder Scrolls

The Elder Scrolls III: Morrowind (4NM_Randomizer)
The Elder Scrolls III: Morrowind (Door Randomizer)
The Elder Scrolls III: Morrowind (DRIP)
The Elder Scrolls III: Morrowind (mort's)
The Elder Scrolls IV: Oblivion (brknndd's)
The Elder Scrolls IV: Oblivion (ddmlink's)
The Elder Scrolls V: Skyrim (Fushigina Dungeon)
The Elder Scrolls V: Skyrim (Random Dungeon Generator) - OBSOLETE
The Elder Scrolls V: Skyrim (Randomized Word Walls)
The Elder Scrolls V: Skyrim Special Edition (Alchemy Effects Randomizer)
The Elder Scrolls V: Skyrim Special Edition (Randomized Birthstones)
The Elder Scrolls V: Skyrim Special Edition (Randomized Word Walls) - OBSOLETE
The Elder Scrolls V: Skyrim Special Edition / The Elder Scrolls V: Skyrim VR (ToxiRandomizer)
The Elder Scrolls V: Skyrim Special Edition (Word Walls Randomizer)

The Goonies

The Goonies II (Netsrotti's) - OBSOLETE
The Goonies II (Veetorp's)

The Guardian Legend

The Guardian Legend (Micheil Skeens's)
The Guardian Legend (Worlds)

The Legend of Heroes

The Legend of Heroes: Trails of Cold Steel (nnguyen259's)
The Legend of Heroes: Trails of Cold Steel III (nnguyen259's) - Modding tool with bundled randomizer

The Legend of Zelda

2D / 2D-like

The Legend of Zelda / The Legend of Zelda: A Link to the Past - See at end of list: Multi-series, Connected worlds
The Legend of Zelda (Fred Coughlin's)
The Legend of Zelda (Infinite Hyrule)
The Legend of Zelda (Reloaded)
The Legend of Zelda (Web Randomizer)
Zelda II: The Adventure of Link (Z2Randomizer)
The Legend of Zelda: A Link to the Past (Bonta0's Multiworld) - Optional Enemizer - Unofficial setup/instructions guide - Unofficial free hosting service - OBSOLETE
The Legend of Zelda: A Link to the Past (Dessyreqt's) - OBSOLETE
The Legend of Zelda: A Link to the Past (Door Randomizer)
The Legend of Zelda: A Link to the Past (Enemizer) - OBSOLETE
The Legend of Zelda: A Link to the Past (Entrance Randomizer) - OBSOLETE
The Legend of Zelda: A Link to the Past (karafruit's) - Source code
The Legend of Zelda: A Link to the Past (Overworld Randomizer)
The Legend of Zelda: A Link to the Past (Veetorp's)
The Legend of Zelda: A Link to the Past/Four Swords (MichaelK__'s)
The Legend of Zelda: Link's Awakening DX (LADXR)
The Legend of Zelda: Link's Awakening DX (Z4Randomizer)
The Legend of Zelda: Link's Awakening (Nintendo Switch) (Glan9's) - OBSOLETE
The Legend of Zelda: Link's Awakening (Nintendo Switch) (Owen-Splat's)
The Legend of Zelda: Oracle of Ages / The Legend of Zelda: Oracle of Seasons
The Legend of Zelda: The Minish Cap (Minish Maker's)
The Legend of Zelda: A Link Between Worlds (Kevin Marsolais's) - OBSOLETE
The Legend of Zelda: A Link Between Worlds (Rick Fay's)

3D

The Legend of Zelda: Ocarina of Time / The Legend of Zelda: Ocarina of Time Master Quest (AmazingAmpharos's) - OBSOLETE
The Legend of Zelda: Ocarina of Time / The Legend of Zelda: Ocarina of Time Master Quest (Roman971's)
The Legend of Zelda: Ocarina of Time / The Legend of Zelda: Ocarina of Time Master Quest (mracsys's)
The Legend of Zelda: Ocarina of Time / The Legend of Zelda: Ocarina of Time Master Quest (TestRunner's)
The Legend of Zelda: Ocarina of Time / The Legend of Zelda: Ocarina of Time Master Quest - See at end of list: Multi-series, Connected worlds
The Legend of Zelda: Ocarina of Time (Beta Quest)
The Legend of Zelda: Ocarina of Time (Ship of Harkinian) - Unofficial PC port with bundled randomizer
The Legend of Zelda: Ocarina of Time 3D (gamestabled's)
The Legend of Zelda: Majora's Mask (Beta Quest) - Requires a cheat engine supporting Gecko codes
The Legend of Zelda: Majora's Mask (DeathBasket's 2013) - Randomizes items based on file name - Requires using non-casual techniques
The Legend of Zelda: Majora's Mask (DeathBasket's 2019) - Located in video description - Requires using non-casual techniques - OBSOLETE
The Legend of Zelda: Majora's Mask (ZoeyZolotova's)
The Legend of Zelda: The Wind Waker (Beta Quest)
The Legend of Zelda: The Wind Waker (LagoLunatic's)
The Legend of Zelda: Twilight Princess (AECX's)
The Legend of Zelda: Twilight Princess HD (Beta Quest) - Located in video description - Source code
The Legend of Zelda: Skyward Sword (lepelog's)
The Legend of Zelda: Breath of the Wild (Wii U) (MelonSpeedruns's)
The Legend of Zelda: Breath of the Wild (Wii U) (Randomized Leveled Chests)
The Legend of Zelda: Breath of the Wild (Wii U) (Waikuteru's)
The Legend of Zelda: Breath of the Wild (Switch) (Waikuteru's)

Unofficial

Link: The Faces of Evil / Zelda: The Wand of Gamelon (Dopply's) - Randomizer for Remastered fan recreations
Zelda Classic (fangame) - Randomizer quests - Mirage Island quest - Yuurand: Tales of the Labyrinth quest

The Little Mermaid

The Little Mermaid (Micheil Skeens's)

The Messenger

The Messenger (Minous27's)

The Simpsons

The Simpsons: Hit & Run (EnAppelsin's)

The Sims

The Sims 4 (NPC Skill Randomizer)

The Talos Principle

The Talos Principle (apple1417's) - Randomizes portals & sigils - Also on Steam Workshop

The Witness

The Witness (jbzdarkid's)
The Witness (Witness Random Puzzle Generator)
The Witness - See at end of list: Multi-series, Connected worlds

The World Ends with You

The World Ends with You (Fractalizon)

Timespinner

Timespinner (Jarno's)
Timespinner - See at end of list: Multi-series, Connected worlds

Tomb Raider

Tomb Raider II (DanzaG's)

Tomodachi

Miitopia (Kobazco's)

Total War

Rome: Total War / Total War: Rome Remastered (sargeantPig's)

Tunic

Tunic (Item Randomizer) - OBSOLETE
Tunic (SilentDestroyer's)

Turok

Turok (Nightdive Studios) (Behemoth's)

Tyrian

OpenTyrian (Tyrian open source port) (TyriGen)

Ultima

Ultima IV: Quest of the Avatar (PC) (Fenyx4's)
Ultima IV: Quest of the Avatar (NES) (Gilmok's)
Ultima VI: The False Prophet (Super NES) (squibbons's)

Uncharted Waters

Uncharted Waters: New Horizons (Gilmok's)

Undertale

Undertale (Geno Randomizer)
Deltarune (SURVEY_PROGRAM) (Deltarando) - Discord account required - Can be found in the #resources channel - Randomizes Chapter 1
Deltarune (Chapter 1&2) (Chapter 2 Encounter Randomizer) - Randomizes Chapter 2

Unreal

Unreal Gold (Die4Ever's)
Unreal Tournament (Map Randomizer) - OBSOLETE
Unreal Tournament (XMaps)

Vagrant Story

Vagrant Story (ChaoticBrave's)

Victoria

Old versions of Paradox Development Studio games are available on Steam as betas.

Victoria II (FortTell's Random World Generator) - Original release forum post for Paradox Interactive account users
Victoria II (Jefferson Pinheiro's Random World Generator) - OBSOLETE

VVVVVV

VVVVVV - See at end of list: Multi-series, Connected worlds

Wario

Wario Land 3 (AaronDobbe's)
Wario Land 4 (IsaGoodFriend's)

Willow

Willow (NES) (djrandos's)

Wizardry

Wizardry: Proving Grounds of the Mad Overlord (NES) / Wizardry II: The Knight of Diamonds (NES) / Wizardry III: Legacy of Llylgamyn (NES) (Cactuar's)

Wolfenstein

Wolfenstein 3D / Spear of Destiny - See at end of list: Multi-series, id Software engines

X

X2: The Threat (Galaxy Editor) - Includes random galaxy creator - OBSOLETE
X2: The Threat (XUniverseWizard) - Download of dependency requires Egosoft account
X3: Terran Conflict (AP Map Generator)

XCOM

XCOM: Enemy Unknown (Wasteland Ghost's)

You Have to Win the Game

You Have to Win the Game (ZZKer's)

Yu-Gi-Oh!

Yu-Gi-Oh! Forbidden Memories (Complete Randomizer / Random Startdeck Mod) - Located under Patches
Yu-Gi-Oh! The Duelists of the Roses (GenericMadScientist's)

Zanac

Zanac (Omaha's)

Zillion

Zillion (Zilliandomizer)
Zillion - See at end of list: Multi-series, Connected worlds

Zombies Ate My Neighbors

Zombies Ate My Neighbors (Genesis) (Zombies Ate My Roguelike)

Multi-series

Connected worlds

id Software engines

Doom (Ultimate) / Doom II / Final Doom / Heretic / Hexen: Beyond Heretic / Strife / Chex Quest (CustomDoom) - OBSOLETE
Doom (Ultimate) / Doom II / Final Doom / Heretic / Hexen: Beyond Heretic / Strife / Chex Quest (Universal Custom Doom)
Doom (Ultimate) / Doom II / Final Doom / Heretic / Hexen: Beyond Heretic / Strife / Chex Quest (Universal Entropy)
Doom (Ultimate) / Doom II / Final Doom / Heretic / Chex Quest 3 (fangame) / Hacx / Harmony (fangame) / Hexen: Beyond Heretic / Strife / Wolfenstein 3D / Spear of Destiny / Super 3D Noah's Ark (OBSIDIAN)
Doom (Ultimate) / Doom II / Final Doom / Heretic (OBLIGE) - Unofficial 64-bit executable - Extensive add-on ObAddon - Add-on for Brutal Doom (mod) - Version 4.28 also supported Hexen: Beyond Heretic / Quake / Quake II - Version 0.97 also had experimental support for Wolfenstein 3D - OBSOLETE
Doom (Ultimate) / Doom II / Final Doom / Heretic (ObHack)
Doom (Ultimate) / Heretic (MOShuffle)

Other

Crash Nitro Kart / Crash Twinsanity / Crash Tag Team Racing / Rayman 3: Hoodlum Havoc / Crash Bandicoot / Crash Bandicoot 2: Cortex Strikes Back / Crash Bandicoot: Warped / Crash Bandicoot: The Wrath of Cortex (Crate Mod Loader)
Duke Nukem 3D / Ion Fury / Shadow Warrior / Blood / PowerSlave (PC) (Build Engine Randomizer)
SpongeBob SquarePants: Battle for Bikini Bottom / The SpongeBob SquarePants Movie / Scooby-Doo: Night of 100 Frights - Level editor with bundled randomizer - User guide

What is this list?

Randomizers are game modifications and utilities that randomly arranges original game data in a way that significantly increase their replayability. Their randomization are applied before or when starting a new game in order to effectively generate many different games to experience based off the originals. They are also designed to prevent new unwinnable states to the game, or at the very least make such issues extremely unlikely or have easily-applicable non-destructive workarounds.

Randomizers may feature major gameplay tweaks to accomodate possible randomized changes, or other additional minor improvements. However, a game modification or utility that may change any other gameplay element and which cannot be disabled would not be considered a randomizer, as the modified game would become closer to a custom game instead of a randomized one.

This list shows all freely-available video game randomizers known to me that are not bundled with the game they randomize, regardless of their fun factor. They are listed by the games they randomize and grouped by game series, along with the randomizer's name (or the primary creators' names if it is too generic) in parentheses, along with any additional documentation whenever necessary. I update the list frequently and try to keep it up-to-date to the best of my abilities.

In order to prevent the list from being polluted with randomizers that do not conform to the above, the following is not considered sufficient for inclusion:

Official games and tools.
Not playable by the general public.
Located behind a paywall.
No significant gameplay changes beyond superficial ones.
Can easily be performed without game modifications.
Reliance on pre-randomized data.
Incomplete coverage of a randomized data type within a standalone game mode.
Limited to a subset of existing maps or levels.
Random object injection within original game areas.
Inconsistent randomization outcomes within the same playthrough.
Chaotic effects.
Recurrent object swapping during gameplay.
Guaranteed to be beatable only by using expert techniques that trivializes the randomization.
Custom data required to be mixed in the pool of game data to be randomized.

The following rules are used to determine the game name showed in the list:

For games with different versions, the list refers to the base game name only, unless an alternate version has significantly different gameplay content in which case it is considered a separate game.
For games with official expansions or downloadable content, only the base game name is listed, even if said expansions or DLCs are required for the associated randomizer to work.
If at least one official English name exists, the most current one is used, with American English prioritized over European English.
Official Japanese names with no official English equivalent are romanized in international Kunrei-shiki, with the exception of katakana which is directly translated.
Whenever different games have identical names, the list refers to the one originally released, unless explicitely specified.
Legal characters are omitted.
Uppercase used for emphasis only are changed to title case.

If you ever notice a video game randomizer valid for inclusion that is not already listed, please contact me so I can add it! Special thanks to the numerous contributors so far that have made this list what it is today!

I want more!

You can chat with other randomizer enthusiasts on the Randomizer Central Discord server community.

You can look for the Randomizer tag on Twitch to easily find channels streaming live randomizer video content.

Many popular randomizers have progression trackers available. EmoTracker is a popular tool that hosts a large collection of them.

For those interested in creating randomizers, you can listen to the Making a Randomizer panel from Awesome Games Done Quick 2019 explaining the process in detail. ROMHacking.net is also a great resource with plenty of technical information and tools for hacking video games in general. Frameworks such as randomtools-js and Simple Randomizer Maker may also help for development purposes.

For those that perfer an original game experience but still want to experience a randomized challenge, Retro Bravery, Scenario Generator and Hitman Roulette can generate interesting rulesets with randomized goals for many classic video games.

While this list is focused on third-party video game randomizers, there are also many official video game randomizers out there. Most notably, the unlockable item randomizer included in the Nintendo 64 version of Resident Evil 2 is believed to be the very first item randomizer ever.

Note that randomizer variants also exist for tabletop games as well, such as Fischer Random Chess and Monopoly Randomizer.