7.Gears of War 3
The Gears of War series may be light on story and character development but it's heavy where it counts: bodies.
This bloodbath is fantastically fun for just blowing the crap out of everything in sight. With a tighter campaign than its predecessors and a killer co-op mode this is a great blood and guts fun-fest. The multiplayer of GOW3 will have a long lifespan, it's one of the best out there.