SDL game engine made for Ludum Dare 24
RPG Games without coding!
OSGET is the first open source mobile game engine template.
A cross platform 3d c++ game engine
Game engine supporting many 3D/2D formats and graphic effects
Free MMORPG Engine. Develop and host graphical browser-based games.
Cross-platform 2D gaming middleware
A DirectX 9 C++ game engine
Zap Engine