Browse free open source C Game Engines and projects below. Use the toggles on the left to filter open source C Game Engines by OS, license, language, programming language, and project status.
A modern, cross-platform Quake game engine based on FitzQuake.
DOOM / Heretic / Hexen source port with enhanced graphics and UI
The flexible game engine
Orx: Portable Game Engine
Retro game engine for creating games like it's 1997
Cross-platform 2D and 3D game engine
SDL based generic 2D game engine
An authentic Rise of The Triad Dark War source port
Conservative port of BOOM 2.02 to modern systems.
A fork of Chocolate Doom with small Quality of Life enhancements
A complete 2D Game Engine with built in drag and drop editor
a UCI chess engine
3D Game Engine
Reference implementation for the Doom game engine.
3D game engine for C and C++