Prototype

Prototype is a game with big map and freedom to move everywhere at anytime. The thing in Prototype is the "unarmed" batтle with armed enemies or mutants. The history is about scientists that made a error in which the whole city is being turned into zombies. Your character is a different virus which is stronger that the zombies. During the game you get experience points that can be used to unlock new weapons and moves. The weapons you use are actually your hand but in different shape.