Free & Open Source Games Made with SDL2
394 free, open-source games made with SDL2 — real clones and remakes you can download, inspect the source of, and modify.
Active
Clone of Carmageddon
Dethrace is a from-scratch reimplementation of Carmageddon (1997) in C, requiring an existing original game installation to run.
Active
Clone of Dark Forces
The Force Engine is a reverse-engineered rebuild of the Jedi Engine, currently offering full Dark Forces support with modern upgrades.
Active
Active
Clone of Gloom (Quake)
An open-source arena shooter blending FPS combat with RTS base-building, inspired by mods like Natural Selection.
Halted
Clone of Arx Fatalis
Arx Libertatis is a cross-platform, GPLv3+ reimplementation of the Arx Fatalis engine for Linux and Windows, though development has halted.
Active
Clone of C-Dogs
C-Dogs SDL is an actively maintained SDL port of C-Dogs, adding 4-player co-op, deathmatch, and over 100 user campaigns.
Platforms:WindowsLinuxOSX
Stars1,084
Updated12 days ago
LicenseGPL-2.0
Release2013
Genre: Shmup
Theme: —
Active
Halted
Clone of Duke Nukem II
A reverse-engineered, feature-complete reimplementation of Duke Nukem II in modern C++, with widescreen and controller support.
Active
Clone of Doom
Crispy Doom is a limit-removing Doom source port with higher resolution, widescreen, and uncapped framerate, staying demo-compatible.
Active
Clone of System Shock
An SDL2 cross-platform source port of System Shock, based on Night Dive Studios' released PowerPC source.
Active
Halted
Halted
Clone of Out Run
Cannonball is a from-scratch C++ rewrite of the OutRun arcade engine, adding higher frame rates and widescreen support.
Active
Clone of Artemis: Spaceship Bridge Simulator
EmptyEpsilon is an open-source game that began as an Artemis Spaceship Bridge Simulator clone but has since diverged with new features.
Platforms:WindowsLinuxAndroid
Stars869
Updated1 month ago
LicenseGPL-2.0
Release2014
Genre: Simulation
Theme: Sci-Fi
Active
Active
Halted
Clone of Super Mario
A C++/SDL2 clone of Super Mario Bros., built by developer Łukasz Jakowski as his first C++ project.
Active
Halted
Clone of Super Mario
A C++ decompilation of the original Super Mario Bros. NES disassembly, requiring the original ROM's graphics data to run.
Active
Clone of Doom
DOOM Retro is a Windows Doom source port by Brad Harding since 2013, aiming for a dark, gritty, pixelated take on the classic game.
Sporadic
Clone of Need For Speed II
A cross-platform wrapper for Need for Speed II SE adding OpenGL rendering and TCP play, with Linux and Android support.
Halted
Active
Active
Clone of Wolfenstein: Enemy Territory
An open-source continuation of Wolfenstein: Enemy Territory with a modernized, compatible engine plus a feature-adding Legacy mod.
Platforms:WindowsLinuxOSX
Stars718
Updated12 days ago
LicenseGPL-3.0
Release2020
Genre: FPS
Theme: World War II
Active
Clone of Deadly Rooms of Death
A GPLv2 puzzle roguelike set on the hyperbolic plane, exploring a procedurally generated non-Euclidean world of over 60 lands.
Active
Clone of Jazz Jackrabbit 2
A from-scratch C++ reimplementation of Jazz Jackrabbit 2, requiring the original game data and running on many platforms.
Active
Active
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.
Active
Clone of Sonic Advance
A work-in-progress matching decompilation of Sonic Advance and Sonic Advance 2, with SDL, PS2, and PSP ports.
Active
Active
Active
Clone of Sonic 3
A non-profit fan remaster of Sonic 3 & Knuckles built on a custom engine, with a remastered soundtrack.
Active
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
Updated14 days ago
LicenseAGPL-3.0
Release2023
Genre: Turn-Based Strategy
Theme: —
Halted
Archived
Active
Clone of Freelancer
A C# and OpenGL reimplementation of Freelancer for Windows and Linux, requiring an existing Freelancer installation to run.
Active
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.
Halted
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
Active
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