"Prototype is a single player, open-world action game where players take control of shape-shifter Alex Mercer. In this gameworld you literally are a genetic prototype hiding in human form. You step out onto the streets of New York with no memory, but limitless potential power. As a terrifying viral epidemic sweeps across Manhattan, top-secret Blackwatch Special Forces move in, transforming it into a war zone. Delve into the mysteries of your origin, the true nature of your power and your part in a conspiracy 40 years in the making."
Seen some Xbox360 deals recently but I'm still waiting for it to come down on PS3. Best price I found so far, though personally still waiting for it to hit <£20 since I'm playing borderlands at the moment.