Prototype is a side-scrolling shooter. Controlling a cutting-edge prototype craft, you must save the world from an alien attack.The ship has 4 different, always available, weapon systems. This makes the game a little bit more tactical than other shooters. Some enemies leave energy pills. These pills are necessary to upgrade your weapon systems four times.The game has 5 different (and long) levels, including mountain and forest settings plus another planet.In Prototype there are no extra lives. You have only one life, but you can always save your game.