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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Active

pacman.c

Clone of Pac-Man

A minimal-dependency Pac-Man clone in C99 for Windows, macOS, Linux and the browser.

Platforms:WebWindowsLinux

Stars593

Updated2 months ago

LicenseMIT

Release2020

Genre: Arcade

Theme: —

Active

OpenApoc

Clone of X-COM: Apocalypse

An alpha reimplementation of X-COM: Apocalypse with modding, a skirmish mode and modern resolutions; it needs the original files.

Platforms:WindowsLinuxOSX

Stars592

Updated12 days ago

LicenseGPL-3.0

Release2014

Genre: Strategy

Theme: Horror

Halted

OpenSkyscraper

Clone of SimTower

An unfinished, unplayable open-source C++ remake of SimTower that needs the original game's SIMTOWER.EXE to run.

Platforms:WindowsLinuxOSX

Stars591

Updated7 years ago

LicenseGPL-2.0

Release2010

Genre: Simulation

Theme: Management

Halted

beijing_fushengji

Clone of 北京浮生记

The official source code (version 1.2.2) for Beijing Fushengji, originally compiled with Visual C++ 6.0 on Windows XP.

Platforms:Windows

Stars590

Updated6 years ago

LicenseGPL-2.0

Release2012

Genre: RPG

Theme: —

Active

No preview

Pokémon HeartGold and SoulSilver

Clone of Pokémon Gold and Silver

A work-in-progress, not-yet-playable disassembly of Pokémon HeartGold and SoulSilver.

Platforms:DS

Stars589

Updated1 month ago

LicenseUnknown

Release2021

Genre: RPG

Theme: —

Active

Return to the Roots

Clone of The Settlers II

A community-maintained reimplementation of The Settlers II adding internet multiplayer, reusing the original's graphics and sound.

Platforms:WindowsLinuxOSX

Stars588

Updated16 days ago

LicenseGPL-2.0

Release2013

Genre: Real-Time Strategy

Theme: Medieval

Sporadic

No preview

mkxp

Clone of RPG Maker

An open-source RGSS runtime for running RPG Maker XP, VX and VX Ace games natively, especially on Linux.

Platforms:WindowsLinuxOSX

Stars587

Updated8 months ago

LicenseGPL-2.0

Release2013

Genre: RPG

Theme: —

Archived

No preview

SBSPSS

Clone of SpongeBob SquarePants: SuperSponge

The preserved full source-code history of the 2001 PS1 platformer SpongeBob SquarePants: SuperSponge, by Climax Studios.

Platforms:PS

Stars583

Updated6 years ago

LicenseUnknown

Release2018

Genre: Adventure

Theme: —

Active

OpenTyrian

Clone of Tyrian

An open-source port of the DOS shooter Tyrian that includes the freeware game data and supports networked play.

Platforms:Windows

Stars572

Updated13 days ago

LicenseGPL-2.0

Release2020

Genre: Shmup

Theme: Sci-Fi

Active

Helion

Clone of Doom

A performance-focused, from-scratch Doom source port using static rendering to run complex modern maps well on any hardware.

Platforms:WindowsLinux

Stars570

Updated11 days ago

LicenseGPL-3.0

Release2019

Genre: FPS

Theme: Sci-Fi

Halted

NullpoMino

Clone of Tetris

An open-source Java falling-block puzzle game with many single-player modes and Internet/LAN netplay.

Platforms:WindowsLinuxOSX

Stars565

Updated5 years ago

LicenseBSD-3-Clause

Release2016

Genre: Puzzle

Theme: Abstract

Halted

Penumbra: Overture

Clone of Penumbra: Overture

Frictional Games' official GPLv3 source code release of Penumbra: Overture, the first Penumbra game.

Platforms:WindowsLinuxOSX

Stars565

Updated8 years ago

LicenseGPL-3.0

Release2010

Genre: Action

Theme: Horror

Active

PySol Fan Club edition

Clone of Klondike

PySol Fan Club edition is an open-source, cross-platform collection of many card solitaire games in Python.

Platforms:WindowsLinuxOSX

Stars564

Updated17 days ago

LicenseGPL-3.0

Release2012

Genre: Card Game

Theme: —

Active

Carnage3D

Clone of Grand Theft Auto

An early-stage open-source C++ remake of the original Grand Theft Auto, adding local split-screen multiplayer for up to 4 players.

Platforms:WebWindowsLinux

Stars561

Updated1 month ago

LicenseMIT

Release2019

Genre: Action

Theme: Crime

Active

Sonic Robo Blast 2

Clone of Sonic the Hedgehog

A 3D Sonic the Hedgehog fangame running on a modified Doom Legacy engine, made independently and unaffiliated with Sega.

Platforms:WindowsLinuxOSX

Stars561

Updated11 days ago

LicenseGPL-2.0

Release2014

Genre: Platform

Theme: —

Active

Hedgewars

Clone of Worms Series

A turn-based strategy game where teams of up to eight hedgehogs battle with over 40 weapons on terrain that deforms as it's damaged.

Platforms:WindowsLinuxOSX

Stars560

Updated1 month ago

LicenseGPL-2.0

Release2013

Genre: Turn-Based Strategy

Theme: —

Active

No preview

WarsmashModEngine

Clone of Warcraft III

Warsmash is an unofficial Java/LibGDX Warcraft III emulator that requires your own copy of the original game's assets.

Platforms:Windows

Stars559

Updated1 month ago

LicenseAGPL-3.0

Release2021

Genre: Real-Time Strategy

Theme: Fantasy

Sporadic

skifree.js

Clone of SkiFree

A more complete work-in-progress JavaScript port of SkiFree, with mobile touch controls, monsters, jumps, and high scores.

Platforms:Web

Stars551

Updated3 months ago

LicenseMIT

Release2012

Genre: Arcade

Theme: —

Active

ZQuest Classic

Clone of Legend of Zelda

A free, open-source engine for building and playing games similar to the original NES Zelda, with hundreds of community quests.

Platforms:WebWindowsLinux

Stars550

Updated12 days ago

LicenseGPL-3.0

Release2015

Genre: Action

Theme: —

Sporadic

NXEngine-evo

Clone of Cave Story

An upgraded NXEngine fork for Cave Story with SDL2, widescreen up to Full HD, localization and initial mod support.

Platforms:WindowsLinuxOSX

Stars548

Updated6 months ago

LicenseGPL-3.0

Release2014

Genre: Adventure

Theme: Sci-Fi

Active

Project Alice

Clone of Victoria II

A rewrite of the open-source Victoria II engine clone Open V2, requiring the original game's files to run.

Platforms:WindowsLinux

Stars547

Updated14 days ago

LicenseGPL-3.0

Release2023

Genre: Real-Time Tactics

Theme: Alternate Historical

Halted

Celeste Classic 2

Clone of Celeste Classic

A PICO-8 platformer about hiking around a mountain, playable on Linux, macOS, Windows, and in the browser.

Platforms:WebWindowsLinux

Stars546

Updated5 years ago

LicenseUnknown

Release2021

Genre: Platform

Theme: —

Sporadic

No preview

PsyDoom

Clone of Doom

A reverse-engineered PC backport of PlayStation Doom and Final Doom, with an optional Vulkan renderer for widescreen.

Platforms:WindowsLinuxOSX

Stars542

Updated11 months ago

LicenseGPL-3.0

Release2019

Genre: FPS

Theme: Sci-Fi

Halted

No preview

Little Big Adventure 2 - Engine source code

Clone of Little Big Adventure 2

The official engine source code release for Little Big Adventure 2, code only — art, models, and audio remain closed.

Platforms:WindowsDOS

Stars540

Updated4 years ago

LicenseGPL-2.0

Release2021

Genre: Action

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