Free & Open Source Clones & Decompilations of Retro Games
4,049 open-source clones, remakes and decompilations of 2,426 retro games — real source code you can read, fork, and play today, not just a free download.
New clones and notable updates, roughly monthly. No spam, unsubscribe anytime.
Original game image
Original game image
Original game image
Original game image
Original game image
Original game image
* Unverified license (our read or source dataset) — check the repository itself.
People are curious about clones of...
Games you know, and the open-source projects that recreate them.
Minecraft
The block-building sandbox that reshaped an entire genre — open-source clones range from full Java reimplementations to engines built from scratch.
43 clones to play
Doom
The 1993 shooter that defined the genre and sparked a modding culture still alive today — its source release made it one of gaming's most-cloned engines.
40 clones to play
Quake
id Software's fully-3D follow-up to Doom — its GPL-released source (QuakeC included) made it one of the most forked engines in open-source gaming.
20 clones to play
Super Mario
The NES platformer that made side-scrolling mainstream — open-source engines recreate its physics and level format down to the pixel.
20 clones to play
Legend of Zelda - A Link to the Past
The SNES classic that set the template for top-down action-adventure — its engine and tile format have been reverse-engineered many times over.
20 clones to play
Diablo II
Blizzard North's dungeon-crawler that defined the ARPG genre — reverse-engineered projects like OpenDiablo2 rebuild it from the original assets up.
6 clones to play
Grand Theft Auto III
The open-world franchise everyone's talking about again — its early file formats and engines have been reverse-engineered for years, well before GTA 6 hype.
4 clones to play
StarCraft
Blizzard's 1998 real-time strategy game that helped build esports as we know it — open-source engines keep its campaign and balance playable today.
5 clones to play
Sonic the Hedgehog
Sega's answer to Mario — its physics and level format have been painstakingly reverse-engineered by fan projects for decades.
8 clones to play