Prometheus is a mission-based, single-player co-op game in the spirit of "Portal" and "Mirror's Edge". By using the Prometheus Device, players bend the laws of Einsteinian physics using the theory of quantum states, meaning that goals are accomplished by completing missions with your past, present and future selves. You'll need to keep your wits about you and your memory sharp in solving puzzles presented with this unique game play mechanic. Progression through the story introduces new challenges, with tasks increasing in difficulty, and a final dramatic conclusion questions present loyalties and even your own existence.

No need to own UT3 just download, install and play.

Prometheus Version 4.0 includes:

• A full circle storyline with three new levels • New awards for tracking progress • Additional custom textures, meshes and animations • Bonus original weapon • New custom layering music system and new voiceovers • Seamless cutscenes • New Epimetheus menu with active previews of individual quantum state histories • Dramatic improvements to the quantum state character movement and firing accuracy