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
Updated1 month ago
LicenseGPL-2.0
Release2013
Genre: Shmup
Theme: —
Active
Original game image
Original game imageClone of Lego Island
LEGO Island, portable ports the LEGO Island decompilation to SDL3 for cross-platform builds, preserving the original 1997 game faithfully.
Platforms:WebWindowsLinux
Stars1,044
Updated2 months ago
LicenseLGPL-3.0
Release2024
Genre: Action-Adventure
Theme: —
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
Original game image
Original game imageClone of Fallout 2
Falltergeist is an open-source, C++ reimplementation of the Fallout 2 engine, requiring original game data files, and currently unplayable.
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
Updated2 months 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
Original game image
Original game imageClone of Sonic Mania
A decompilation of Sonic Mania requiring official game assets, adding a built-in mod loader and support for building past releases.
Platforms:WindowsXbox OnePS4
Stars792
Updated1 month ago
LicenseUnknown
Release2020
Genre: Platform
Theme: —
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
Original game image
Original game imageClone of Return to Castle Wolfenstein
iortcw is a modernized baseline engine for Return to Castle Wolfenstein and its mods, with development now halted but still playable.
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
Updated1 month 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.
Platforms:WindowsLinuxOSX
Stars664
Updated3 months ago
LicenseUnknown
Release2022
Genre: Platform
Theme: —
Active
Active
Original game image
Original game imageClone of Descent
A source port of Descent and Descent II that modernizes them for current PCs with OpenGL rendering and UDP multiplayer.
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
Updated2 months ago
LicenseAGPL-3.0
Release2023
Genre: Turn-Based Strategy
Theme: —
Halted
Original game image
Original game imageClone of Super Mario World
A reverse-engineered reimplementation of Super Mario World, verified frame-by-frame against a reference emulator for accuracy.
Archived
Original game image
Original game imageClone of Duke Nukem 3D
A faithful, now-archived source port of Duke Nukem 3D staying close to the original code, with added educational comments.
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
Updated2 months ago
LicenseGPL-2.0
Release2013
Genre: Real-Time Strategy
Theme: Medieval