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.
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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