#6 Battlefield 3
Battlefield 3 is DICE's true follow-up to the Battlefield series. With a new engine capable of rendering earth-shattering physics without so much as a hiccup, Battlefield 3 is modern warfare bigger, and badder than ever before.
In addition to the single player campaign—a first for the Battlefield series (unless you're counting Bad Company 1 & 2)—Battlefield 3's multiplayer mode supports up to 64 players in life-scaled battlefields. Players can take to vehicles such as tanks, attack helicopters, and jet fighters. New to the series is a new modular weapons system and unlock challenges.
Battlefield 3 is without a doubt the year's best military FPS.