Cross-Platform C++ 2D/3D game engine
An OpenGL RTS game engine written in C
A modern cross-platform low-level graphics library
Xash3D FWGS engine
Simple and light-weight 3D game engine
Zig game engine & graphics toolkit
Voxel game engine in C++ with OpenGL
A re-implementation of Freelancer
Vulkan renderer mod for Minecraft
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
3D Engine c++
aka ogre v2 - scene-oriented, flexible 3D C++ engine
A Minecraft mod designed to improve frame rates
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Improved Quake III Arena engine
3D Procedural Game Engine Using OpenGL
Multi-Joint dynamics with Contact. A general purpose physics simulator
Animation engine for explanatory math videos
A modular Common Lisp game engine
crossplatform multithreaded object-oriented render and audio engine
Android OpenGL 2.0 application to view 3D models
SwiftShader is a high-performance CPU-based implementation
Innovative user interfaces made easy
Game engine supporting many 3D/2D formats and graphic effects
Open source clone of the Age of Empires II engine