A 2D Adventure Game & Engine
Java Gamepad API for multiple platforms
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.
Library for creating turn-based games with simultaneous moves.
3D Interactive sandbox environment
A 3D, fully concurrent game engine
A multiplatform game engine for interactive fiction experiences
Open source network game service
A tool for editing OHRRPGCE RPG files
A truly extensible cross-platform game engine
UtiliGame is a light-weight game engine written in Java.
An open source skateboard games engine written in C# and .NET.
Pear3DEngine is a modern and modular 3D development framework
Pong esta basado en el juego clásico Ping Pong, desarrollada en Java.
C-Lesh is a game programming language for 2D games.