Radical Entertainment has just announced that Prototype 2 will be offering exclusive content to players who pre-order the game from Gamestop. North American fans who pre-order from Gamestop from now until April 23, 2012 will receive the "Sgt. James Heller’s Bio-Bomb Butt Kicker ability."

“Butt Kicker is a fun twist on Heller’s already over-the-top new Bio-Bomb ability,” said Ken Rosman, Studio Head, Radical Entertainment.  “Rather than just throwing enemies once Heller has infected them with the Blacklight virus; Butt Kicker allows Heller to drop-kick punt them across the map, turning enemies into projectiles that rain down devastation from above.”

You can follow updates by heading over to Prototype 2's official site, or by following their Twitter feed and FaceBook page.

Prototype 2 is out for the Xbox 360, Playstation 3, and PC on April 24, 2012.