3D game engine for C and C++
A very small multi-platform game engine for creating desktop games.
Tactical, turn-based game engine, that uses OpenGL and WinAPI
Open source, moddable game engine for the "Polygon Love 2" game
WIP Game engine
Easy to use 3D game engine based on OGRE 3D
WGFX 2D Game Engine
cross-platform 2d game engine
"Abysmal Depths" is a simple C++-based text adventure game engine.
Cross Engine is game engine for Windows, Mac, Linux and Android
Point-and-click 2D game engine
The Lambda-Engine is a cross platform game engine.
A DirectX based graphics/physics engine
Cross-platform 2D game engine
A cross platform 3d c++ game engine
Cross-platform 2D gaming middleware
A 3D multiplayer RPG based in the world of Khoras.