Cross-platform C framework very compact libraries and tools.
SDL 2 headers for Free Pascal Compiler
A generic 2D engine for any kind of game
AutoTeach makes kids study and learn in exchange for internet access.
a game library to develop audio games
A 2D Adventure Game & Engine
Java Gamepad API for multiple platforms
Multi-threaded 2D Renderer licensed under the Mozilla Public License
C++ game libraries plus server.
Modular Gaming Open Source Persistent Browser Based Game Framework
Take the chess graphism, and use it with a chess engine.
A 2D game engine base on OpenGL and SDL,support for Windows & Linux
TurboSphere is an easy to learn and powerful JS based game engine.
Library for creating turn-based games with simultaneous moves.
Minecraft side viewed game made in Java
C++ Framework for slot machine games
A world editor for HGE game engine written in python and uses OpenGL.