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.

Arcade Puzzle Platformer RPG Strategy FPS All genres →

New clones and notable updates, roughly monthly. No spam, unsubscribe anytime.

Halted

Rigel Engine

Clone of Duke Nukem II

A reverse-engineered, feature-complete reimplementation of Duke Nukem II in modern C++, with widescreen and controller support.

Platforms:WebWindowsLinux

Stars1,004

Updated2 years ago

LicenseGPL-2.0

Release2016

Genre: Platform

Theme: Sci-Fi

Active

No preview

Visual Pinball

Clone of Visual Pinball

The official open-source pinball editor and simulator, with 1,050+ real and 550+ original tables across many platforms.

Platforms:WindowsLinuxOSX

Stars1,004

Updated11 days ago

LicenseUnknown

Release2016

Genre: Arcade

Theme: —

Active

No preview

Yamagi Quake II

Clone of Quake 2

An enhanced, actively maintained Quake II client with widescreen, modern controller, and OpenGL 3.2 support.

Platforms:WindowsLinuxOSX

Stars1,003

Updated12 days ago

LicenseUnknown

Release2012

Genre: FPS

Theme: Sci-Fi

Active

KeeperFX

Clone of Dungeon Keeper

KeeperFX is an open-source expansion and remake of Dungeon Keeper for modern Windows, requiring the player's own original game files.

Platforms:Windows

Stars999

Updated11 days ago

LicenseGPL-2.0

Release2015

Genre: Simulation

Theme: Horror

Sporadic

Prince of Persia (JS) - princejs.com

Clone of Prince of Persia

A browser-based HTML5/JavaScript remake of the MS-DOS Prince of Persia, playable free at princejs.com.

Platforms:Web

Stars999

Updated4 months ago

LicenseUnlicense

Release2021

Genre: Platform

Theme: —

Sporadic

No preview

Pokémon Ruby and Sapphire

Clone of Pokémon Ruby and Sapphire

A disassembly that rebuilds Pokémon Ruby and Sapphire's Game Boy Advance ROMs from source code.

Platforms:GBA

Stars987

Updated5 months ago

LicenseUnknown

Release2016

Genre: RPG

Theme: Fantasy

Active

TRX

Clone of Tomb Raider

An open-source, single-engine reimplementation of Tomb Raider I-III with restored content, photo mode, and more.

Platforms:WindowsLinuxOSX

Stars987

Updated11 days ago

LicenseGPL-3.0

Release2021

Genre: Platform

Theme: —

Active

FreeSO

Clone of The Sims Online

FreeSO is a MonoGame reimplementation of The Sims Online, now serving mainly as an engine base for other TSO servers.

Platforms:Windows

Stars976

Updated13 days ago

LicenseMPL-2.0

Release2015

Genre: Simulation

Theme: Management

Active

RA2Web React

Clone of Command & Conquer: Red Alert 2

RA2Web React is a from-scratch TypeScript/React/Three.js rebuild of Red Alert 2's engine, playable in a web browser.

Platforms:Web

Stars965

Updated23 days ago

LicenseUnknown

Release2025

Genre: Real-Time Strategy

Theme: Modern Military

Active

No preview

The Legend of Zelda: The Wind Waker

Clone of The Legend of Zelda: The Wind Waker

This is a work-in-progress decompilation of The Wind Waker for GameCube, aiming for a binary identical to the original disc.

Platforms:GameCube

Stars964

Updated11 days ago

LicenseCC0-1.0

Release2023

Genre: Action

Theme: —

Active

Crispy Doom

Clone of Doom

Crispy Doom is a limit-removing Doom source port with higher resolution, widescreen, and uncapped framerate, staying demo-compatible.

Platforms:WindowsLinuxOSX

Stars947

Updated18 days ago

LicenseGPL-2.0

Release2014

Genre: FPS

Theme: Sci-Fi

Active

OpenMW

Clone of The Elder Scrolls III: Morrowind

An open-source engine for playing Morrowind and its expansions on modern systems, with its own construction set.

Platforms:WindowsLinuxOSX

Stars935

Updated8 days ago

Licensegpl-3.0+

Release2018

Genre: RPG

Theme: Fantasy

Sporadic

No preview

Zork III Source Code Collection

Clone of Zork

The original 1982 ZIL source code for Infocom's Zork III, preserved as an anonymously contributed development snapshot.

Platforms:None

Stars916

Updated10 months ago

LicenseMIT

Release2019

Genre: Adventure

Theme: —

Halted

NEO-RAW

Clone of Another World

A readability-focused reimplementation of the Another World engine; needs the original PC DOS game data.

Platforms:Linux

Stars913

Updated1 year ago

LicenseGPL-2.0

Release2011

Genre: Adventure

Theme: Sci-Fi

Halted

bash2048

Clone of 2048

bash2048 is a deprecated, unmaintained Bash shell-script implementation of 2048, controlled with the arrow keys.

Platforms:Linux

Stars910

Updated2 years ago

LicenseUnlicense

Release2014

Genre: Puzzle

Theme: —

Active

Unknown Horizons

Clone of Anno series

An early, not-yet-playable Godot 4 rewrite of the Anno-style city-building RTS Unknown Horizons.

Platforms:WindowsLinux

Stars902

Updated13 days ago

LicenseGPL-2.0

Release2019

Genre: Real-Time Strategy

Theme: —

Active

Shockolate

Clone of System Shock

An SDL2 cross-platform source port of System Shock, based on Night Dive Studios' released PowerPC source.

Platforms:WindowsLinuxOSX

Stars900

Updated18 days ago

LicenseGPL-3.0

Release2018

Genre: RPG

Theme: —

Archived

Storm Engine

Clone of Age of Pirates 2: City of Abandoned Ships

The open-source engine behind the Sea Dogs, Pirates of the Caribbean, and Age of Pirates games, now archived and community-maintained.

Platforms:Windows

Stars898

Updated2 years ago

LicenseGPL-3.0

Release2020

Genre: Action

Theme: —

Sporadic

No preview

The Legend of Zelda: The Minish Cap

Clone of The Legend of Zelda: The Minish Cap

This is a work-in-progress decompilation of The Minish Cap for Game Boy Advance, built from a retail or demo ROM you supply.

Platforms:GBA

Stars894

Updated7 months ago

LicenseUnknown

Release2020

Genre: Action

Theme: —

Active

qengine

Clone of Quake 2

A stripped-down engine forked from Quake II's codebase, built as a base for new standalone retro games, not for playing Quake II.

Platforms:WindowsLinux

Stars892

Updated1 month ago

LicenseGPL-2.0

Release2018

Genre: FPS

Theme: Sci-Fi

Halted

No preview

Falltergeist

Clone of Fallout 2

Falltergeist is an open-source, C++ reimplementation of the Fallout 2 engine, requiring original game data files, and currently unplayable.

Platforms:WindowsLinux

Stars890

Updated3 years ago

LicenseGPL-3.0

Release2012

Genre: RPG

Theme: —

Sporadic

No preview

Raze

Clone of Blood

Raze is a GZDoom-powered source port that runs Duke Nukem 3D, Blood, Shadow Warrior, and other Build-engine games.

Platforms:WindowsOSX

Stars885

Updated10 months ago

LicenseUnknown

Release2019

Genre: FPS

Theme: —

Active

No preview

Pokémon Yellow

Clone of Pokémon Red, Blue, and Yellow

A disassembly that rebuilds Pokémon Yellow's Game Boy ROM entirely from source code.

Platforms:Game Boy

Stars875

Updated24 days ago

LicenseUnknown

Release2015

Genre: RPG

Theme: Fantasy

Halted

Cannonball

Clone of Out Run

Cannonball is a from-scratch C++ rewrite of the OutRun arcade engine, adding higher frame rates and widescreen support.

Platforms:Windows

Stars871

Updated2 years ago

LicenseUnknown

Release2012

Genre: Arcade

Theme: —

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