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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Zelda A Link to the Past Port

Clone of Legend of Zelda - A Link to the Past

A Nintendo 3DS dual-screen port of Zelda3, the reverse-engineered engine, which needs your own USA ROM.

Stars696

Updated1 month ago

LicenseUnknown

Release2026

Genre: Action

Theme: —

Halted

Command & Conquer: Generals (original game, not this project)

Original game image

Thyme

Clone of Command & Conquer: Generals

An open-source rewrite of Command & Conquer Generals: Zero Hour, currently requiring the original game's binary.

Platforms:Windows

Stars690

Updated2 years ago

LicenseGPL-2.0

Release2017

Genre: Real-Time Strategy

Theme: Sci-Fi

Active

Exult

Clone of Ultima VII: The Black Gate

A from-scratch C++ engine reimplementation letting Ultima VII and Serpent Isle run on modern systems using original game data.

Platforms:WindowsOSXAndroid

Stars685

Updated1 month ago

LicenseGPL-2.0

Release2016

Genre: RPG

Theme: —

Archived

OpenVIII

Clone of Final Fantasy VIII

An archived, unfinished C#/MonoGame engine re-implementation for Final Fantasy VIII.

Platforms:WindowsLinux

Stars674

Updated2 years ago

LicenseMIT

Release2018

Genre: RPG

Theme: —

Halted

Cave Story Sega Megadrive Port

Clone of Cave Story

A rewrite and port of the freeware game Cave Story for the Sega Mega Drive/Genesis.

Stars673

Updated1 year ago

LicenseUnknown

Release2015

Genre: Adventure

Theme: Sci-Fi

Sporadic

2048.c

Clone of 2048

A console implementation of 2048 written in C for GNU/Linux, also tested on FreeBSD and OpenBSD.

Platforms:Linux

Stars670

Updated7 months ago

LicenseMIT

Release2014

Genre: Puzzle

Theme: —

Active

Sonic Advance 2

Clone of Sonic Advance

A work-in-progress matching decompilation of Sonic Advance and Sonic Advance 2, with SDL, PS2, and PSP ports.

Platforms:WindowsLinuxOSX

Stars664

Updated3 months ago

LicenseUnknown

Release2022

Genre: Platform

Theme: —

Active

Original game image

Oolite

Clone of Elite

An open-source Elite clone for modern PCs that can be heavily extended with expansion packs adding ships, graphics and gameplay.

Platforms:WindowsLinux

Stars659

Updated1 month ago

LicenseUnknown

Release2013

Genre: Action

Theme: Sci-Fi

Sporadic

Open Hexagon

Clone of Super Hexagon

An open-source, Lua-scriptable arcade survival game inspired by Super Hexagon, with a 180° swap move and online leaderboards.

Platforms:WindowsLinux

Stars656

Updated5 months ago

LicenseUnknown

Release2012

Genre: Rhythm

Theme: —

Active

OpenCiv3

Clone of Civilization III

A fan-made, mod-friendly Civilization III remake built with Godot and C#, currently in pre-alpha.

Platforms:WindowsLinuxOSX

Stars656

Updated1 month ago

LicenseMIT

Release2021

Genre: Turn-Based Strategy

Theme: —

Sporadic

WebQuake

Clone of Quake

WebQuake is a browser-based HTML5/WebGL port of Quake that supports multiplayer with native WinQuake and GLQuake clients.

Platforms:Web

Stars652

Updated6 months ago

LicenseUnknown

Release2013

Genre: FPS

Theme: Fantasy

Active

Banjo-Kazooie (original game, not this project)

Original game image

Banjo-Kazooie Decompilation

Clone of Banjo-Kazooie

The code is split into modules that can be built individually or all together with make.

Stars649

Updated1 month ago

LicenseCC0-1.0

Release2021

Genre: Adventure

Theme: —

Halted

Stunt Rally

Clone of TrackMania

A VDrift/OGRE-based 3D rally-stunt racer with 202 tracks, 25 vehicles, and a built-in Track Editor for GNU/Linux and Windows.

Platforms:WindowsLinux

Stars647

Updated2 years ago

LicenseGPL-3.0

Release2011

Genre: Racing

Theme: —

Active

Dance Dance Revolution (original game, not this project)

Original game image

Performous

Clone of Dance Dance Revolution

An open-source karaoke, band and dance game that uses SingStar, Guitar Hero and Rock Band controllers.

Platforms:WindowsLinuxOSX

Stars645

Updated2 months ago

LicenseUnknown

Release2012

Genre: Rhythm

Theme: —

Active

Sonic '06 (original game, not this project)

Original game image

Sonic the Hedgehog (2006) Recompilation

Clone of Sonic '06

An unofficial PC port of the Xbox 360 Sonic the Hedgehog (2006) made by static recompilation; still in development.

Stars645

Updated1 month ago

LicenseGPL-3.0

Release2025

Genre: Action

Theme: —

Active

Descent (original game, not this project)

Original game image

DXX-Rebirth

Clone of Descent

A source port of Descent and Descent II that modernizes them for current PCs with OpenGL rendering and UDP multiplayer.

Platforms:WindowsLinuxOSX

Stars637

Updated2 months ago

LicenseUnknown

Release2013

Genre: FPS

Theme: Sci-Fi

Active

Sonic 3 A.I.R.

Clone of Sonic 3

A non-profit fan remaster of Sonic 3 & Knuckles built on a custom engine, with a remastered soundtrack.

Platforms:WebWindowsLinux

Stars634

Updated1 month ago

LicenseGPL-3.0

Release2021

Genre: Platform

Theme: —

Halted

clidle

Clone of Wordle

A terminal-based, SSH-playable clone of Wordle written in Go, playable via a hosted SSH instance or local install.

Platforms:Linux

Stars633

Updated1 year ago

LicenseMIT

Release2022

Genre: Puzzle

Theme: —

Active

Duck Hunt JS

Clone of Duck Hunt

A from-scratch JavaScript/HTML5 remake of Duck Hunt playable in the browser, built with PixiJS, GreenSock, and Howler.

Platforms:Web

Stars632

Updated4 months ago

LicenseMIT

Release2011

Genre: Arcade

Theme: —

Active

LinCity-NG

Clone of SimCity

A modernized continuation of classic LinCity, a city-building sim where you build a sustainable city or evacuate everyone by spaceship.

Platforms:WindowsLinux

Stars632

Updated1 month ago

LicenseGPL-2.0

Release2015

Genre: Simulation

Theme: Management

Halted

Spear of Destiny (original game, not this project)

Original game image

wolf3d-browser

Clone of Spear of Destiny

id Software's GPL source release for the free, browser-playable version of Wolfenstein 3D published by Bethesda.

Platforms:Web

Stars632

Updated13 years ago

LicenseGPL-2.0

Release2013

Genre: FPS

Theme: —

Active

GLSMAC

Clone of Sid Meier's Alpha Centauri

An unofficial open-source reimplementation of Sid Meier's Alpha Centauri and Alien Crossfire, requiring a legally owned original copy.

Platforms:WindowsLinux

Stars631

Updated2 months ago

LicenseAGPL-3.0

Release2023

Genre: Turn-Based Strategy

Theme: —

Active

Mario Kart Wii Recompilation

Clone of Mario Kart Wii

A static recompilation of Mario Kart Wii and Retro Rewind for Android, iPhone, iPad and Mac, with touch and motion controls.

Stars630

Updated1 month ago

LicenseGPL-3.0

Release2026

Genre: Racing

Theme: —

Halted

DwarfCorp

Clone of Dwarf Fortress

An open-source, procedurally generated fantasy RTS/tycoon game where you manage a dwarf colony mining resources and fighting for profit.

Platforms:WindowsLinuxOSX

Stars628

Updated2 years ago

LicenseUnknown

Release2015

Genre: Strategy

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.

43 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.

20 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 III

2001Action

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

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.

5 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.

8 clones to play