Old-school 2D game engine
Portable game engine with main focus on point-and-click adventures
A game engine written in the D programming language
An advanced flexible game engine for Java.
Multimedia asset management and manipulator for Étoilé
A generic 2D engine for any kind of game
Take the chess graphism, and use it with a chess engine.
Library for creating turn-based games with simultaneous moves.
A 3D, fully concurrent game engine
Pear3DEngine is a modern and modular 3D development framework
An extensible development framework for roleplay games.
Cross-platform reimplementation of AMOS BASIC (runtime)
Multi-Language Wrapper Collection for the Irrlicht Engine
Game framework on top of Python, Panda3D and Twisted
AMOS BASIC reimplementation in Java
The Lambda-Engine is a cross platform game engine.