Some Game Mods have their own work pages; this index is meant to collect them all in one place. The Modding Tree engine for Prestige Tree has its own page, list ones not made in that engine here.
0 A.D.
ARMA II
- Banjo-Dreamie
- Banjo Kazooie Legend Of The Crystal Jiggy
- Banjo Kazooie Worlds Collide
- The Legend of Banjo-Kazooie: The Jiggies of Time
Battlefield series
The Battle for Middle-earth series
Blood series
- The Binding of Isaac: Antibirth (Would later be altered and merged with the base game when The Binding Of Isaac: Repentance was released.)
- The Binding Of Isaac: Epiphany
- The Binding Of Isaac: Revelations
- Job Modpack
- Reverie - Touhou Combinations (Crossover with Touhou Project)
- Fiend Folio
Civilization IV
Command & Conquer: Red Alert 2
Command & Conquer: Red Alert 3
Command & Conquer: Tiberian Sun
- Dawn of the Tiberium Age (later released as freeware game)
- Twisted Insurrection (later released as freeware game)
- After the End: A Post-Apocalyptic America
- Crisis of the Confederation
- Crusader Kings II: Game of Thrones Mod
- The Four Nations - An Avatar: The Last Airbender Mod
- New Era - Old World
- DDLC Purist Mod
- Doki Doki: A Brand New Day
- Doki Doki Blue Skies
- Doki Doki Rainclouds
- Doki Doki Salvation
- Our Final Heartbeat
- Monika Before Story
Doom (classic)
- Action Doom 2: Urban Brawl
- Aetherius
- The Adventures of Massmouth
- The Adventures Of Square
- Angelic Waifus
- Ashes 2063
- Batman Doom
- Brutal Doom
- Call of Dooty
- Chex Quest
- Codename Demolitionist
- Complex Doom
- Demonsteele
- Genesis Saga Aurora
- Ghouls vs. Humans
- GMOTA
- Going Down
- Grezzo 2
- Guncaster
- Insanitys Requiem
- Hacx
- Harmony
- Hideous Destructor
- High Noon Drifter
- Highway Acceleroid Booster
- Hunter's Moon
- Lt. Typhon
- Mega Man 8-Bit Deathmatch
- Memoirs of Magic
- Project Brutality
- Quake Champions: Doom Edition
- Reelism
- REKKR
- Russian Overkill
- Schism
- Shadow of the Wool Ball
- Sigil
- Sonic Robo Blast 2
- Strange Aeons
- Trailblazer
- Trench Foot
- TurboCharged ARCADE!
- Viet Doom
- ZDoom Wars
The Elder Scrolls III: Morrowind
The Elder Scrolls IV: Oblivion
- Amorous Adventures
- Beyond Reach
- Beyond Skyrim
- Conan Hyborian Age
- Enderal
- Falskaar
- Frostfall
- The Forgotten City (later adapted into a stand-alone game)
- Inigo
- Interesting NPCs
- Legacy of the Dragonborn
- Lucien
- Ordinator — Perks of Skyrim
- Relics of Hyrule
- Requiem - The Roleplaying Overhaul
- Rigmor
- Vigilant
Star Wars: Empire at War
Escape Velocity Nova
- Autumn Leaves
- Beyond Boulder Dome
- Dog City Denver
- Fallout: Dust
- Five Nights at Vault 5
- For the Enclave
- The Frontier
- Hell on Earth
- Honest Hearts Reborn
- Mikeburnfire's NPCs and Quests
- More Perks Mod
- New California
- The Overseer Series
- The Rockwell Series
- The Someguy Series
- A World of Pain
- A Cannibal In Concord
- Concussion
- Fallout 4: Northern Springs
- Fallout Frost
- Fallout London
- Fallout UIF
- Maxwell's World
- Sanctuary Hot Springs
- Sim Settlements 2
- Tales from the Commonwealth
- Vault 1080
- Vault 83: The Librarian
Fire Emblem: The Blazing Blade
Fire Emblem: The Sacred Stones
- Bells Of Byelen
- Fire Emblem: Code of the Black Knights
- Fire Emblem: Code of the Burger King
- Fire Emblem: The Four Kings
- Fire Emblem: Justice and Pride
- Fire Emblem: The Sun God's Wrath
- Fire Emblem: Vision Quest
- Midnight Sun (remade into Path of the Midnight Sun, a standalone game)
- Ancient-Shivan War
- The Babylon Project: Started as a Game Mod for FreeSpace 2 but ended up a standalone game that just uses the FS2 engine.
- Blue Planet
- Derelict
- Dimensional Eclipse
- Just Another Day
- Silent Threat: Reborn
- Wings of Dawn
Freedom Force series
- Animation VS Friday Night Funkin
- Arrow Funk
- The Basement Show
- BETADCIU
- Big Brother Mod
- The Blueballs Incident
- Concert Conundrum
- Cosmo Calamity Vs Yukichi
- Craziness Injection
- Cyber Sensation
- Dine N Dash
- Doki Doki Takeover!
- Elegant Night Dancin'
- Entity Origins: BREAKOUT
- Everywhere at the End of Funk
- FNF: Artistic Altitude
- FNF Week Sigma
- Friday Doge Funkin'
- Friday Night Clownin
- Friday Night Dustin'
- Friday Night Fankan
- Friday Night Fever
- Friday Night Foundation
- Friday Night Funkin' - A World of Our Own
- Friday Night Funkin': B3 Remixed
- Friday Night Funkin', But Bad
- Friday Night Funkin': Corruption
- Friday Night Funkin Crystal
- Friday Night Funkin' D-Sides
- Friday Night Funkin': ENTITY
- Friday Night Funkin' HD
- Friday Night Funkin Hellbeats
- The Friday Night Incident
- Friday Night Funkin' Lullaby
- Friday Night Funkin': Maginage Matches
- Friday Night Funkin': Mario's Madness
- Friday Night Funkin' Minus
- Friday Night Funkin: Namco Museum
- Friday Night Funkin': Neo
- Friday Night Funkin': Nightmare Of The Mushroom Kingdom
- Friday Night Funkin': Reboot Me
- Friday Night Funkin' Soft
- Friday Night Funkin': Tails Gets Trolled
- Friday Night Funkin' X-Ray Mod
- Friday Night Monster Of Monsters
- Friday Night Sandboxin'
- Friday Night Shootin'
- Friday Night the 13th
- Friday Night Trepidation
- Friday Night Troubleshootin
- Friendly Night Funkin'
- Fruit Medley Mayhem
- Funkin For Hire
- Funkin' MIX
- Graffiti Groovin'
- Happy Tree Funkers
- Heartly Paranoia
- HoloFunk
- Hotline 024
- The Impostor Boyfriend Saga
- Indie Cross
- In the Galaxy
- Kreadian Funk
- Late Night City Tales
- Lily In Grave
- Literally Every FNF Mod Ever (a.k.a. Vs. Bob)
- Martian Mixtape
- Mid-Fight Masses
- Monday Dusk Monolith
- Night of the Funky Bot
- Non-Canon Ina Week
- NuSky + Skyverse
- Phantastical Boundaries
- Pick n' Pluck - Vs. Rosie
- Pico Night Punkin'
- Plant's Night Funkin Replanted
- Plants vs. Rappers
- Postal F: Apocalypse Friday
- Post-Morten Mix-Up (Vs. King)
- QT Mod
- Salty's Sunday Night
- Saturday Night Swappin'
- Scarlet Melopoeia
- Shaggy X Matt
- Ski Sings For You!
- Sky Remanifested
- Smoke 'Em Out Struggle
- Spooky's Saturday Scare
- Static Memories
- Starlight Mayhem
- Stickman VS Friday Night Funkin
- Sunday Night Suicide
- Sunday Night Suicide Soft
- Tales From The Raveyard
- Times & Tribulations—Vs. Omega
- The Tricky Mod
- Twinsomnia
- Vs. Ace
- Vs Anders
- Vs Annie
- Vs. Auditor: Gateway to Hell
- Vs Bob And Bosip
- Vs Bogus
- VS Carol
- VS Cassandra
- Vs Cheeky
- Vs. Eddsworld
- VS Flippy
- Vs. Flippy: Flipped Out!
- Vs Hex Mod
- Vs Impostor
- Vs Javier
- VS. Kapi - Arcade Showdown
- Vs Neko Freak
- vs. NEON
- Vs Nonsense
- Vs Pompom
- Vs. RetroSpecter
- VS Ron: The Resurrection
- VS Shaggy
- Vs. Singe and Sear
- VS Sketchy
- VS Sky
- Vs Sonic.exe
- Vs Spinel
- Vs Spong
- Vs Starecrown
- VS Sunday
- Vs Tabi Ex Boyfriend
- Vs Torture
- VS Trollface
- Vs Whitty
- V.S Zardy - Foolhardy
- Vulture Culture
- Weegee Invasion
- Week Σ - Vs. Demetrios
- Wii Funkin
FunHouse (1990) (pinball machine)
- FunHouse: Rudy's Nightmare (officially licensed, sold for profit)
- Afraid of Monsters
- Cry of Fear (Later remade as a commercial game)
- Crack Life
- Counter-Strike (Later owned by Valve)
- Cthulhu: An Unspeakable Mod
- Half-Quake
- Heart of Evil
- Jamie's Mod
- Nuclear Winter
- Pirates Vikings and Knights (It's sequel Pirates, Vikings and Kinghts 2 got released on Steam)
- Poke646
- Scientist Slaughterhouse
- The Specialists
- Sven Co-op (Later remade as a commercial game)
- Sweet Half-Life
- Team Fortress Classic (Originally named just Team Fortress under used from Quake engine until later owned by Valve)
- They Hunger
- Zombie Panic
- Black Mesa (Later remade as a commercial game)
- Black Snow
- The Closure
- Day Hard
- Dear Esther (Later remade as a commercial game)
- Dystopia (Later remade as a commercial game)
- Entropy : Zero
- Fistful of Frags (Later remade as a commercial game)
- Garry's Mod (Later remade as a commercial game)
- Elevator: Source
- GMod Tower (Later adapted into a Spiritual Successor titled Tower Unite)
- Murder!
- Jazztronauts
- Prop Hunt
- Slashers
- Trouble in Terrorist Town
- Fat Kid
- Zombie Survival
- Get a Life
- Iron Grip
- Grey (Half-Life 2)
- The Hidden: Source
- Hunt Down the Freeman
- Terminal 7
- Insurgency: Modern Infantry Combat (Later remade as a commercial game titled Insurgency)
- Korsakovia
- MINERVA: Metastasis (Later remade as a commercial game)
- Missing Information
- Mistake of Pythagoras
- NeoTokyo (2014) (Later remade as a commercial game)
- Nightmare House
- No More Room In Hell (Later remade as a commercial game)
- Research & Development
- Sarma Cube
- The Stanley Parable (Later remade as a commercial game)
- Underhell
- Equestria at War
- Fallout Pre-War
- The Gates of Versailles
- HOI 4 Beyond Earth
- Kaiserreich: Legacy of the Weltkrieg
- The New Order: Last Days of Europe
- Old World Blues
- Red Flood
- Red World
- Spartakus: World in Revolution
- Thousand-Week Reich
- Von Der Asche
- The Fire Rises (Mod)
- Iji_MSPFA (the mod of the Interactive Comic of the game)
- I Wanna Kill the Kamilia (while it modifies some original levels, it is mainly a mod of other fangames)
Star Wars: Jedi Knight: Jedi Academy
Star Wars: Knights of the Old Republic II: The Sith Lords
The Legend of Zelda: Ocarina of Time
Mario Kart series
Mega Man series
- Mega Man X3 - Zero Project
- Rockman CX
- Rockman 2 Deus Ex Machina
- Rockman Exhaust
- Rockman 4 Minus Infinity
- Rockman 7 EP
- Rockman No Constancy
Stackable Mods
- The Aether
- Advent Of Ascension
- Alex's Mobs
- Blightfall
- BuildCraft
- The Lord of the Rings Mod: Bringing Middle-earth to Minecraft
- Lycanites Mobs
- Millenaire
- Miskatonic Mysteries
- Mo' Creatures
- OreSpawn
- Scape and Run: Parasites
- Technic Pack
- Thaumcraft
- The Twilight Forest
- Witchery
Overhaul/Conversion Mods
Maps
- 1866: A Mount & Blade Western
- Anno Domini 1257
- Europe 1200
- Gekokujo
- The Last Days (of the Third Age of Middle Earth)
- Light & Darkness: Heroes of Calradia
- Phantasy Calradia
- Prophesy of Pendor
- The Reckoning
- Solid & Shade
- Star Wars Conquest
- Sword of Damocles
- The Aielund Saga
- The Bastard of Kosigan
- A Dance with Rogues
- d20 Modern Neverwinter Nights
- Gladiatrix
- July Anarchy
- Tales of Arterra
Paper Mario: The Thousand-Year Door
Pokémon series
- Dragon Ball Z Team Training
- Moemon
- Pokemon Adventure Red Chapter
- Pokémon Blaze Black and Volt White
- Pokemon Blue Kaizo
- Pokémon Brown and Prism
- Pokémon Crystal Clear
- Pokémon Crystal Enhanced
- Pokemon Crystal Kaizo
- Pokémon Dark Rising
- Pokemon Emerald Kaizo
- Pokémon False Red
- Pokemon Fire Red Rocket Edition
- Pokémon Flora Sky
- Pokémon Fool's Gold
- Pokémon Gaia
- Pokémon Light Platinum
- Pokemon Moon Emerald
- Pokémon Polished Crystal
- Pokémon Quartz
- Pokémon Radical Red
- Pokémon R.O.W.E.
- Pokémon Snakewood
- Pokemon Stadium Kaizo
- Pokémon Sweet Version
- Pokémon Unbound
- Pokémon Vietnamese Crystal
- Touhou Ningyougeki
- Twitch Plays Pokémon Crystal Anniversary (stand-alone version)
- Portal:The Flash Version
- Portal: Prelude
- Blue Portals
- Aperture Tag: The Paint Gun Testing Initiative (Later released as a commercial game)
- Portal Reloaded
- Portal Stories: Mel (Later released as a commercial game)
- Portal Stories: VR
- Repercussions (Still in development since at least 2013)
- Arcane Dimensions
- Beyond Belief (later a downloadable mod for the 2021 remastered edition of the game)
- Honey (later a downloadable mod for the 2021 remastered edition of the game)
- The Punishment Due (later a downloadable mod for the 2021 remastered edition of the game)
- Rubicon 2 (later a downloadable mod for the 2021 remastered edition of the game)
- Team Fortress 1 (later remade as Team Fortress Classic, which is a mod of Half-Life instead)
- Terra (later a downloadable mod for the 2021 remastered edition of the game)
- Underdark Overbright (later a downloadable mod for the 2021 remastered edition of the game)
- Urban Terror (Later released as a standalone freeware game following the release of the id Tech 3 source code)
Sonic the Hedgehog series
- Amy Rose in Sonic the Hedgehog
- Robotnik's Revenge
- Sonic Erazor
- Sonic Mania & Hatsune Miku
- Sonic the Hedgehog Megamix
- Sonic the Very Useful Engine
- See Recap.Star Trek Online for missions created with the Foundry Level Editor.
- Koopa Kingdom Escape
- Mario Adventure
- Super Mario Bros. 3Mix
- Super Pony All Stars (Crossover with My Little Pony: Friendship Is Magic)
- ALPHA SPHERE
- Brutal Mario
- Casio Mario World
- Chaos CompleXX
- Fishing Season
- Game Dot BPS
- Hammer Brother
- JUMP
- Kaizo Mario World
- Luigi's Misadventures (Crossover with Codename: Kids Next Door)
- Mario & Luigi: Kola Kingdom Quest
- MARIO by M A R I O
- Mario Gives Up
- Mario's Mystery Meat
- The Second Reality Project
- An SMWC Production
- Something
- Super Mario Bros. 3X
- Super Mario Bros.: For Lost Players
- Super Mario Bros 5 Reborn
- Super Demo World: The Legend Continues
- Super Mario World: Piranha Island
- A Super Mario Thing
- Super Pansy World
- 'the
- Vanilla Level Design Contest
- B3313
- Breaking The Barrier
- SM64.z64
- Super Mario Star Road
- Super Mario 64 Chaos Edition
- Super Mario 64 Land
- Super Mario 64: Last Impact
- Star Revenge
Total War series
- Alien Swarm (Later remade as a commercial game under Valve's Source engine)
- Ballistic Weapons
- Killing Floor (Later remade as a commercial game)
- Out Of Hell
- Red Orchestra (Later remade as a commercial game)
- Defense of the Ancients (later remade as Dota 2)
- The Heart of Storms
- Legacy of Lordaeron
- Rise of the Blood Elves
- To the Bitter End
- Wanderers of Sorceria
