Almost everything in the catalog is built by volunteers who have kept a project alive for a decade or more without charging anyone a penny. Here they are.
2015, Inc.
1 game · since 0
Activision Publishing, Inc.
Developer/publisher of Call of Duty: Mobile.
1 game · since 0
Aleph-One-Marathon
GitHub organization
1 game · since 0
Anuke
One developer. One factory. Endless waves.
1 game · since 2017
ArenaNet
Developer of Guild Wars and Guild Wars 2.
1 game · since 0
assaultcube
GitHub organization
1 game · since 0
bauxite
1 game · since 0
Bethesda Softworks
Elder Scrolls, Doom, Quake, and more.
3 games · since 1986
Beyond All Reason Team
Total war at total scale.
1 game · since 2019
BioWare
1 game · since 0
Blizzard Entertainment
StarCraft, Diablo, Hearthstone, and Battle.net.
1 game · since 1991
Blue Mammoth Games
Developer of Brawlhalla, published by Ubisoft.
1 game · since 0
Bomber Games
1 game · since 0
Broadsword
Developer of Star Wars: The Old Republic, published by EA.
1 game · since 0
Bullfrog Productions
1 game · since 0
Core Design
Original creators of the legendary Tomb Raider series.
1 game · since 1988
Cryptic Studios
Developer of Star Trek Online, published by Arc Games.
1 game · since 0
cxong
GitHub user
1 game · since 0
Darkflow Software
Developer of Enlisted, published by Gaijin.
1 game · since 0
Daybreak Game Company
Stewards of EverQuest and classic MMOs.
1 game · since 2015
Devclerk
Small team behind the guild-management sim Ye Guild Clerk!
1 game · since 0
Digital Extremes
Work, Play, Game
2 games · since 1993
Dimensional Ink Games
Developer of DC Universe Online, published by Daybreak.
1 game · since 0
Dune Legacy
Free open-source remake of the classic 1992 RTS game Dune II. Download for Windows, macOS, and Linux.
1 game · since 0
ECWolf Team
Modern Wolfenstein 3D source port.
1 game · since 2012
Embark Studios
Developer of THE FINALS.
1 game · since 0
Endless Sky Contributors
A galaxy, written and drawn by volunteers.
1 game · since 2014
Eric Froemling
Solo developer of BombSquad, published as Ballistica.
1 game · since 0
Everstone Studio
Developer of the wuxia open world Where Winds Meet.
1 game · since 0
Fenris Creations
Developer of EVE Online.
1 game · since 0
Firefly Studios
1 game · since 0
FlightGear Project
Open-source flight simulation.
1 game · since 1997
Freedoom Project
Free IWADs for Doom engines.
1 game · since 2001
Gaggle Studios, Inc.
Developer of the social deduction game Goose Goose Duck.
1 game · since 0
Gaijin Entertainment
War Thunder and vehicular combat.
1 game · since 2002
Gameloft
Developer of the Asphalt racing series.
1 game · since 0
GOG.com
Being the Dungeon Keeper and all, this is your home, too. And it’s your business to ta
1 game · since 0
Grinding Gear Games
Developer of the free action RPG Path of Exile.
1 game · since 0
Hedgewars Project
Serious engineering. Unserious hedgehogs.
1 game · since 2006
Hoyoverse
Genshin Impact and anime open worlds.
1 game · since 2014
Hurry Curry Contributors
1 game · since 0
id Software
Quake, Doom, and arena shooters.
1 game · since 1991
Indie Web
Browser and indie games on the open web.
8 games · since 2026
Jagex Ltd
Developer of RuneScape and Old School RuneScape.
1 game · since 0
Kay Yu
Solo developer behind HoloCure.
1 game · since 2022
Locomalito
1 game · since 0
Looking Glass Studios
2 games · since 0
Luanti Team
The open voxel game platform.
1 game · since 2010
Mad Otter Games
Developer of Villagers & Heroes.
1 game · since 0
Massive Entertainment
2 games · since 0
Matt Wright
1 game · since 0
MegaPhilX
A decade-long labour of love for classic Mega Man.
1 game · since 2010
Merso X
OpenBOR TMNT fangames and beat 'em up tributes.
1 game · since 2019
Moth Atlas
1 game · since 0
Naev DevTeam
Charting a 2D galaxy, release by release.
1 game · since 2004
New World Computing
1 game · since 0
Obsidian Entertainment
1 game · since 0
Oddshot Games
Developer of the multiplayer football game Strikers Club.
2 games · since 0
OpenArena Team
Free Quake III–style arena action.
1 game · since 2005
OpenCiv3 Contributors
Civilization III as it could have been.
1 game · since 2021
OpenHV Community
1 game · since 0
OpenRA Team
Reimagining classic RTS games for the modern era.
1 game · since 2007
OpenTTD Team
Twenty years of trains running on time.
1 game · since 2004
Pablo Leban
Solo developer of the idle RPG Idle Slayer.
1 game · since 0
poke 53280
1 game · since 0
Privateer Gemini Gold Team
Rebuilt a 1993 space sim on an open-source engine.
1 game · since 2005
Quinton Reeves
Quinton Reeves — from Steam store credits
1 game · since 0
Re-Volt I/O
The popular racing game from
1 game · since 0
Riot Games
Developer of League of Legends: Wild Rift.
1 game · since 0
Riot Games
League of Legends and VALORANT.
2 games · since 2006
Ryzom Core Community | Nevrax Library
Build your own beautiful worlds using the Ryzom Core MMORPG tools and NeL game engine.
1 game · since 0
Sandbox Interactive
Developer of the player-driven sandbox MMO Albion Online.
1 game · since 0
Second Dinner Studios
Developer of MARVEL SNAP.
1 game · since 0
Shattered Pixel
Roguelike design, sharpened to a point.
1 game · since 2014
Singularity 6 Corporation
Developer of the cozy life-sim MMO Palia.
1 game · since 0
SNK CORPORATION
SNK CORPORATION — from Steam store credits
1 game · since 0
Solarus Team
1 game · since 0
Splash Damage
Creators of Wolfenstein: Enemy Territory and Enemy Territory: Quake Wars.
1 game · since 2001
SS14
A multiplayer game about paranoia and disaster, remaking the classic Space Station 13
1 game · since 0
Standing Stone Games
Developer of The Lord of the Rings Online.
1 game · since 0
Starry Studio
Developer of the survival MMO Once Human.
1 game · since 0
SUNCYAN Inc.
Developer of the volleyball game The Spike Cross.
1 game · since 0
SuperTux Team
Platforming with a penguin since 2003.
1 game · since 2003
SuperTuxKart Team
Karts, chaos, and open-source mascots.
1 game · since 2006
SWG Community Editions
Keeping the galaxy online.
1 game · since 2011
Team Psykskallar
Team Psykskallar — from Steam store credits
1 game · since 0
Team Xonotic
Keepers of the arena shooter flame.
1 game · since 2010
thatgamecompany
Studio behind Sky: Children of the Light and Journey.
1 game · since 0
The Freeciv Project
Turn-based empire building since the 90s.
1 game · since 1995
The Trigger Rally Team
Open-source 3D arcade off-road rally racing simulation.
1 game · since 2004
The Ur-Quan Masters Team
1 game · since 0
The Wesnoth Project
Two decades of open-source fantasy strategy.
1 game · since 2003
The YSoccer Project
Classic 16-bit retro top-down football preservation and modern continuation.
1 game · since 2008
Thera Interactive
Developer of the naval MMO World of Sea Battle.
1 game · since 0
tinywind
Pixel pirate sailing.
1 game · since 2025
Totem Arts
1 game · since 0
TripleA: An Open Source Turn Based Grand Strategy Game
Free open-source strategy game inspired by Axis & Allies. Windows, macOS, and Linux. No account required. 100+ maps - play vs AI or live multiplayer.
1 game · since 0
Ubisoft Montreal
Developer of Tom Clancy's Rainbow Six Siege.
1 game · since 0
Unvanquished Development
Asymmetric warfare, open development.
1 game · since 2011
Valve
Valve — from Steam store credits
4 games · since 0
Veloren Team
Building an open voxel world in Rust.
1 game · since 2018
Warzone 2100 Project
Keeping a 1999 classic alive and evolving.
1 game · since 2004
widelands
GitHub organization
1 game · since 0
Wildfire Games
Historical RTS craftsmanship since 2001.
1 game · since 2001
Zero-K Team
Physics-first strategy design.
1 game · since 2010