Prototype is an open-world action game where players control Alex Mercer, a powerful shapeshifter infected with a mysterious virus spreading across New York City. Armed with devastating biological abilities, players can transform limbs into deadly weapons, sprint across skyscrapers, and consume enemies to steal identities and memories. The game combines brutal combat, high-speed traversal, and explosive destruction while uncovering dark conspiracies behind the outbreak. Its fast-paced gameplay delivers a chaotic superhero experience driven by power and survival.