Luck can be determined by a simple game...
Easy to use 3D game engine based on OGRE 3D
WIP Game engine
Pear3DEngine is a modern and modular 3D development framework
WGFX 2D Game Engine
Game Communications Engine
cross-platform 2d game engine
Mighty 34th century meka action from TeamXbow
"Abysmal Depths" is a simple C++-based text adventure game engine.
Final Fantasy like 3D Game
Cross Engine is game engine for Windows, Mac, Linux and Android
Point-and-click 2D game engine
Indi Developed Game Environment/Engine
Cross-platform reimplementation of AMOS BASIC (runtime)
A minecraft clone thing on the cube 2 engine
a realtime graphics library