Free & Open Source Clones & Remakes of Retro Games

3,241 open-source clones and remakes of 1,919 retro games — real source code you can read, fork, and play today, not just a free download.

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Halted

PythonPlantsVsZombies

Clone of Plants vs. Zombies

PythonPlantsVsZombies is a Python and Pygame recreation of Plants vs. Zombies with a subset of its plants and zombies.

Platforms:None

Stars3,764

Updated2 years ago

LicenseUnknown

Release2019

Genre: Strategy

Theme: —

Active

Thrive

Clone of Spore

An open-source evolution sim where you guide a species from a single cell through mutation-driven natural selection.

Platforms:Windows

Stars3,706

Updated11 days ago

LicenseUnknown

Release2012

Genre: Simulation

Theme: Sci-Fi

Halted

No preview

Amnesia: The Dark Descent

Clone of Amnesia: The Dark Descent

The official GPL-licensed engine source for Amnesia: The Dark Descent, which won't compile out of the box without the discontinued FBX SDK.

Platforms:WindowsLinuxOSX

Stars3,672

Updated6 years ago

LicenseGPL-3.0

Release2020

Genre: Adventure

Theme: Horror

Active

Cubyz

Clone of Minecraft

Cubyz is a Minecraft-inspired 3D voxel sandbox written in Zig, with unlimited-height chunking and procedural tool crafting.

Platforms:WindowsLinux

Stars3,661

Updated12 days ago

LicenseGPL-3.0

Release2019

Genre: Action

Theme: Fantasy

Active

OpenXRay

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

A community-improved X-Ray Engine for S.T.A.L.K.E.R. with 64-bit support, bug fixes and Linux/macOS ports.

Platforms:Windows

Stars3,559

Updated11 days ago

LicenseUnknown

Release2014

Genre: FPS

Theme: Alternate Historical

Active

OpenGOAL

Clone of Jak and Daxter: The Precursor Legacy

A native PC port of the Jak and Daxter trilogy, decompiled from the original GOAL code; requires your own PS2 discs.

Platforms:WindowsLinuxOSX

Stars3,510

Updated12 days ago

LicenseISC

Release2020

Genre: Platform

Theme: Fantasy

Active

Daggerfall Unity

Clone of The Elder Scrolls II: Daggerfall

Daggerfall Unity recreates Daggerfall natively in Unity with hundreds of bug fixes, widescreen rendering, and extensive mod support.

Platforms:WindowsLinuxOSX

Stars3,496

Updated12 days ago

LicenseMIT

Release2015

Genre: RPG

Theme: —

Active

fheroes2

Clone of Heroes of Might and Magic II

fheroes2 is an open-source, from-scratch recreation of the Heroes of Might and Magic II engine, with high-resolution graphics and better AI.

Platforms:WindowsLinuxOSX

Stars3,479

Updated11 days ago

LicenseGPL-2.0

Release2019

Genre: Turn-Based Strategy

Theme: —

Active

No preview

Pokémon Emerald

Clone of Pokémon Ruby and Sapphire

A decompilation of Pokémon Emerald that rebuilds a byte-matching GBA ROM from reconstructed source code.

Platforms:GBA

Stars3,469

Updated25 days ago

LicenseUnknown

Release2015

Genre: RPG

Theme: Fantasy

Active

No preview

LEGO Island Decompilation

Clone of Lego Island

A complete decompilation of LEGO Island 1.1, reproducing its original binaries byte-for-byte as a base for modification, not end users.

Platforms:Windows

Stars3,467

Updated16 days ago

LicenseLGPL-3.0

Release2023

Genre: Action-Adventure

Theme: —

Active

Julius

Clone of Caesar III

Julius is an open-source reimplementation of Caesar III reproducing the original's logic and save compatibility, with widescreen support.

Platforms:WebWindowsLinux

Stars3,375

Updated14 days ago

LicenseAGPL-3.0

Release2017

Genre: Simulation

Theme: Management

Halted

No preview

Quake 2

Clone of Quake 2

id Software's official GPL source release for Quake II (v3.19), built and tested with Visual C++ 6.0.

Platforms:WindowsLinux

Stars3,343

Updated2 years ago

LicenseUnknown

Release2012

Genre: FPS

Theme: Sci-Fi

Halted

Serious Engine

Clone of Serious Sam: The First Encounter

Croteam's official open-source release of Serious Engine 1.10, the toolchain behind the original Serious Sam Classic games.

Platforms:Windows

Stars3,179

Updated5 years ago

LicenseGPL-2.0

Release2016

Genre: FPS

Theme: —

Active

sandspiel

Clone of Powder Game

A browser-playable falling-sand simulation in Rust/WebAssembly and WebGL, letting players create, share, and fork creations.

Platforms:Web

Stars3,168

Updated16 days ago

LicenseMIT

Release2018

Genre: Simulation

Theme: —

Sporadic

Pokete

Clone of Pokémon

A terminal-based Python creature-battling game styled after Pokémon, with its own creatures, types, and trainer battles.

Platforms:WindowsLinuxOSX

Stars3,156

Updated4 months ago

LicenseGPL-3.0

Release2021

Genre: RPG

Theme: —

Active

SuperTux

Clone of SuperTux

An open-source Super Mario Bros.-inspired platformer starring Tux the penguin, rescuing Penny from the villain Nolok.

Platforms:WebWindowsLinux

Stars3,144

Updated11 days ago

LicenseGPL-3.0

Release2013

Genre: platformer

Theme: —

Active

No preview

Super Mario Bros Remastered

Clone of Super Mario Bros.

An open-source, Godot-built recreation of the classic Super Mario Bros. games with a full level editor and custom characters.

Platforms:WindowsLinux

Stars3,142

Updated16 days ago

LicenseGPL-3.0

Release2025

Genre: Action

Theme: —

Active

No preview

GZDoom

Clone of Doom

GZDoom is a modder-friendly source port of the Doom engine covering Doom, Heretic, and Hexen, with OpenGL and Vulkan rendering support.

Platforms:WindowsLinux

Stars3,102

Updated1 month ago

LicenseGPL-3.0

Release2013

Genre: FPS

Theme: Sci-Fi

Active

Widelands

Clone of The Settlers II

Widelands is a free, open-source RTS inspired by The Settlers II, with singleplayer campaigns, multiplayer, and Lua-scripted scenarios.

Platforms:WindowsLinuxOSX

Stars3,061

Updated11 days ago

LicenseGPL-2.0

Release2019

Genre: Real-Time Strategy

Theme: Medieval

Sporadic

No preview

Descent 3

Clone of Descent 3

The official open-source release of the Descent 3 engine under GPL-3.0, running on Windows, Linux, macOS, and Android.

Platforms:WindowsLinuxOSX

Stars3,006

Updated8 months ago

LicenseGPL-3.0

Release2024

Genre: FPS

Theme: Sci-Fi

Archived

No preview

Space Engineers

Clone of Space Engineers

Keen Software House's archived release of Space Engineers' official source code, requiring an owned Steam copy of the game to build.

Platforms:Windows

Stars2,980

Updated4 years ago

LicenseUnknown

Release2015

Genre: Simulation

Theme: —

Active

Dagor Engine

Clone of War Thunder

Dagor Engine is Gaijin Entertainment's official open-source release of the engine behind War Thunder, with a full build toolkit.

Platforms:Windows

Stars2,962

Updated1 month ago

LicenseUnknown

Release2023

Genre: Action

Theme: Modern Military

Active

wipEout Rewrite

Clone of Wipeout

A work-in-progress, asset-free re-implementation of the 1995 PSX racer Wipeout for SDL2, Sokol, and web.

Platforms:WebWindowsLinux

Stars2,962

Updated1 month ago

LicenseUnknown

Release2023

Genre: Racing

Theme: Sci-Fi

Active

kys-cpp

Clone of Heroes of Jin Yong

kys-cpp is a C++ remake of the 1996 wuxia RPG Heroes of Jin Yong, adding real-time combat modes inspired by Hades and Sekiro.

Platforms:WindowsLinux

Stars2,961

Updated25 days ago

LicenseBSD-3-Clause

Release2016

Genre: RPG

Theme: Fantasy

People are curious about clones of...

Games you know, and the open-source projects that recreate them.

View all originals

Minecraft

2009Action

The block-building sandbox that reshaped an entire genre — open-source clones range from full Java reimplementations to engines built from scratch.

41 clones to play

Doom

1993FPS

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

1996FPS

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

1985Platform

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

1991Action

The SNES classic that set the template for top-down action-adventure — its engine and tile format have been reverse-engineered many times over.

17 clones to play

Diablo II

2000RPG

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

1998Action

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.

3 clones to play

StarCraft

1998Real-Time Strategy

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.

4 clones to play

Sonic the Hedgehog

1991Platform

Sega's answer to Mario — its physics and level format have been painstakingly reverse-engineered by fan projects for decades.

7 clones to play