Godot game template and component-based framework
A game engine with an emphasis on real-time cutting-edge solutions
Enigma is a puzzle game
The multiplayer game engine
Amazon Lumberyard is a free AAA game engine
X3D Prototypes for the SMUOS Component
Colour matching/mixing toolkit for modellers
realistic truck & car simulator, with OpenGL graphics
A framework for games with defense towers along a path.