The flexible game engine
Xash3D FWGS engine
An OpenGL RTS game engine written in C
An iOS & tvOS Frontend for Multiple Emulators
Orx: Portable Game Engine
This is a re-implementation of the 1995 PSX game wipEout
A simple and easy-to-use library to enjoy videogames programming
A completely free, open-source, 2D game engine
stb single-file public domain libraries for C/C++
Game engine to build text adventures.
Low-latency AI inference engine optimized for mobile devices
The ioquake3 community effort to continue supporting/developing id's
3D game engine/framework in C, with Luajit and Python bindings now
Go bindings for raylib, a simple and easy-to-use library
Multi-Joint dynamics with Contact. A general purpose physics simulator
A free and open-source Touhou Project fangame
Simple DirectMedia Layer
CGL (C Game Library) is a multipurpose library
A modern, cross-platform Quake game engine based on FitzQuake.
SDL based generic 2D game engine
Old style soccer game with many exciting features
0 A.D. is a free, open-source, cross-platform real-time strategy game.
Run any game or software on Windows, powered by ForPC.
A cross-platform port of Hexen II game.