A game framework written with osu! in mind.
Gideros Release version
SDL based generic 2D game engine
Source code of the chapters of the book 3D Game Development with LWJGL
Flexible and easy-to-use 2d game engine
Open Game Bootstrap
evolution for vegastrike SpaceSim/Combat/Trade game
Multimedia asset management and manipulator for Étoilé
A mobile tower 3D tower defense/defend the flag game
A world editor for HGE game engine written in python and uses OpenGL.
C++ Framework for slot machine games
A graphics engine + toolkit.
Open Source Virtual World and MMOG Development Platform
Simple Point & Click Game
The Lambda-Engine is a cross platform game engine.
A generic C++ MUD server featuring a strategy-style hexagon map