Animation Compression Library
Set of Python modules designed for writing video games
UCI chess engine
GUI for downloading/managing homebrew apps for video game consoles
A simple and easy-to-use library to enjoy videogames programming
C# application with primary purpose of farming Steam cards
Open source cross-platform multi-purpose game toolkit
One framework for creating powerful cross-platform games
Multi Theft Auto is a game engine
Video game library manager with support for wide range of libraries
Solar2D Game Engine main repository (ex Corona SDK)
A game of dungeon exploration, combat and magic
Cross-Platform C++ 2D/3D game engine
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Powerful, mature open-source cross-platform game engine for Python
A charting and data visualization library for Unity
Open-source engine for Heroes of Might and Magic III
A simple math library for games and computer graphics
2D game development library for Ruby and C++
Accuracy-focused XNA4 reimplementation for open platforms
A cross-platform, open-source, pure C game engine for mobile game
A Steam library categorizing tool
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Homebrew development library for Nintendo 3DS/Horizon OS user mode
A lightweight game server framework implemented with Actor Model