High Quality Content by WIKIPEDIA articles! The C4 Engine is a computer game engine developed by Terathon Software that is used to create 3D games and other types of interactive virtual simulations for Windows (XP, Vista, and 7), Mac OS X (versions 10.5, 10.6, and 10.7), and PlayStation 3. It is ranked in the number one position among commercial game engines on the engine review site DevMaster.net.