2D Game Engine with Lua Scripting made on top of SFML
A cross platform Lua based game engine
Cross-platform 2D and 3D game engine
A fast, scalable, distributed game server engine/framework for C++
Planimeter Game Engine 2D - LÖVE-based game engine for Lua
3D-Accelerated open-source DOOM engine
EDGE is an advanced DOOM source port
Game engine for playing tomb raider 1 - 5 levels.
starrydb is game server engine
IRB is a game creation toolkit
2d/3d Game Engine
Babylon 5 in Homeworld 2!
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A space game in the Hoshikaze 2250 universe, built on the NAEV engine
A free engine for C&C Tiberian Dawn
A Simple Game Engine