Open Source real-time strategy game engine for early Westwood games
Simple and light-weight 3D game engine
Cross-Platform C++ 2D/3D game engine
Flax Engine, multi-platform 3D game engine
Cross-platform 2D and 3D game engine with modular architecture
aka ogre v2 - scene-oriented, flexible 3D C++ engine
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Parabator 2 - Free 3d board game
Desktop/Android/HTML5/iOS Java game development framework
SwiftShader is a high-performance CPU-based implementation
Voxel game engine in C++ with OpenGL
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Roo Code (prev. Roo Cline) gives you a whole dev team of AI agents
Powerful, mature open-source cross-platform game engine for Python
Lightweight, high-performance HTML renderer for game developers
Open source clone of the Age of Empires II engine
3D Procedural Game Engine Using OpenGL
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Emscripten: An LLVM-to-WebAssembly Compiler
RenderDoc is a stand-alone graphics debugging tool
An iOS & tvOS Frontend for Multiple Emulators
A modular Common Lisp game engine
Game engine supporting many 3D/2D formats and graphic effects
Doom-based AI research platform for reinforcement learning
A re-implementation of Freelancer