Ze Text Adventure game Builder : Create as you play !
C++ lightweight cross-platform game engine
ZDoom 2.8.1 fork focusing on modernisation, performance and stability
Old-school 2D game engine
Game/Scene Development System
Vivid3D is an open-source 3D engine with powerful 2D UI.
Tools and Z80 engine for creating adventure games.
3D Scene Builder
Amateur 3D Game Engine
SDL based generic 2D game engine
A simple cross-platform game engine for creating old-school 2D games
An isometric arcade-style game of skill, puzzles and exploration
Fork of AbuseSDL to carry on development
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
QQ Group:538722494,KSFramework = KEngine + SLua(or xLua)
Improved version of the X-Ray Engine, the game engine
2D Game Engine
mGSTEP port of the Cube game engine
KlayGE is a cross-platform open source game engine
A cross-platform 2D game engine
A cross platform Lua based game engine
A fast, scalable, distributed game server engine/framework for C++
A 2D game engine and level editor
Cross-platform 2D and 3D game engine