Cross-Platform C++ 2D/3D game engine
An OpenGL RTS game engine written in C
Xash3D FWGS engine
A modern cross-platform low-level graphics library
Simple and light-weight 3D game engine
Zig game engine & graphics toolkit
GZDoom is a feature centric port for all Doom engine games
UZDoom is a feature centric port for all Doom engine games
Vulkan renderer mod for Minecraft
A re-implementation of Freelancer
Voxel game engine in C++ with OpenGL
A Minecraft mod designed to improve frame rates
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
A completely free, open-source, 2D game engine
3D Engine c++
Improved Quake III Arena engine
A modular Common Lisp game engine
Multi-Joint dynamics with Contact. A general purpose physics simulator
aka ogre v2 - scene-oriented, flexible 3D C++ engine
Simple DirectMedia Layer
3D Procedural Game Engine Using OpenGL
Animation engine for explanatory math videos
Game engine supporting many 3D/2D formats and graphic effects
crossplatform multithreaded object-oriented render and audio engine