The shooter to make you say "Halo what?"
The campaign, while short, is amazing and can best be described and a blur of bullets, grenades, and awesomeness (ever lay prone while a platoon of tanks and soldiers pass you by?). The story is typical real-world affairs.
The multiplayer is the real winner here. Matches range from 12-18 players and the action is fast and furious. The create-a-class system works wonderfully and keeps every match challenging and unique. The rank system also makes Halo 3 cry. Every match you complete gains you experience. No back-peddling just because you played a bad match against modding bastards. New weapons, attachments, and perks are unlocked as your rank rises. Bottom line- the more you play it, the better it gets.
Fans of shooters must play this. Period.