Ever since we saw the early trailer of Killzone 2 for the PS3, we’ve been extremely excited about the game. My theory is that it’ll become the PS3′s much-needed killer app. This video has some of the most exciting gameplay you’ve ever seen. Hands down. I personally think this demo alone shits all over the already-to-familiar Halo 3. Peep it holmes, ’cause it looks AMAZING!