Animation Compression Library
Set of Python modules designed for writing video games
UCI chess engine
A simple and easy-to-use library to enjoy videogames programming
Open source cross-platform multi-purpose game toolkit
GUI for downloading/managing homebrew apps for video game consoles
C# application with primary purpose of farming Steam cards
Multi Theft Auto is a game engine
One framework for creating powerful cross-platform games
A game of dungeon exploration, combat and magic
Cross-Platform C++ 2D/3D game engine
Solar2D Game Engine main repository (ex Corona SDK)
Open-source engine for Heroes of Might and Magic III
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Powerful, mature open-source cross-platform game engine for Python
Accuracy-focused XNA4 reimplementation for open platforms
A .NET ascii/ansi console engine written in C# for MonoGame and XNA
A charting and data visualization library for Unity
RPG Maker 2000/2003 and EasyRPG games interpreter
A Steam library categorizing tool
A pure Go game engine
A simple math library for games and computer graphics
Homebrew development library for Nintendo 3DS/Horizon OS user mode
2D game development library for Ruby and C++
A lightweight game server framework implemented with Actor Model