TR Game Engine allows you to develop your game quickly and easily.
Take the chess graphism, and use it with a chess engine.
A multiplatform game engine for interactive fiction experiences
A 3D, fully concurrent game engine
A truly extensible cross-platform game engine
C-Lesh is a game programming language for 2D games.
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
An extensible development framework for roleplay games.
A game engine in java for 2D strategy games
Cross-platform reimplementation of AMOS BASIC (runtime)
Multi-Language Wrapper Collection for the Irrlicht Engine
The Lambda-Engine is a cross platform game engine.
Simple Point & Click Game
Game framework on top of Python, Panda3D and Twisted
AMOS BASIC reimplementation in Java