Players will take control of anti-hero Alex Mercer, who wakes up in a mysterious laboratory as an experiment with no memory of his past. The world of Prototype is engulfed in a three-way conflict between the military, a mutated viral epidemic, and Mercer - who has become a weapon in his own right. The whole game is built around the idea of "weaponising" yourself. Mercer can absorb his enemies, taking on their memories and appearance.

You are a shape shifter - the Prototype. Consume and become anyone; hide in plain sight as a normal human and mix and match genetic traits to create incredible never-before-seen deadly biological weapons. Consume people and gain their skills, knowledge and personality. Fight a secret war against a conspiracy out to capture or kill you; defeat it before it threatens the survival of New York itself.