http://uk.xboxlive.ign.com/articles/121/1216016p1.html
Major Nelson just revealed a list of 2011's most popular games played while connected to Xbox Live.
1. Call of Duty: Black Ops
2. Call of Duty: Modern Warfare 3
3. Call of Duty: Modern Warfare 2
4. Halo: Reach
5. Battlefield 3
6. The Elder Scrolls V: Skyrim
7. Gears of War 3
8. FIFA 12
9. FIFA Soccer 11
10. Madden NFL 12
11. GTA IV
12. NBA 2K11
13. Battlefield: Bad Company 2
14. Call of Duty 4: Modern Warfare
15. Battlefield 3 Beta
16. Halo 3
17. Gears of War 2
18. Forza Motorsport 4
19. Red Dead Redemption
20. Call of Duty: World at War
The retail list is pretty typical stuff. Call of duty dominates the top 3, halo reach manages to be the most played non call of duty game ending in number 4 followed by Battlefield 3.
Other newer games include Skyrim, Gears of War 3, Forza 4 and sport games like madden and fifa.
Alot of older games have still a cult following in multiplayer including CoD4, Halo 3, RDR and GTA IV
Now to the arcade games.
1. Pinball FX 2
2. Full House Poker
3. Castle Crashers
4. Fruit Ninja Kinect
5. From Dust
6. Trials HD
7. Magic: The Gathering -- Duels of the Planeswalkers 2012
8. Dead Rising 2: Case West
9. Torchlight
10. Toy Soldiers: Cold War
11. Plants vs. Zombies
12. Portal: Still Alive
13. Bastion
14. Limbo
15. Game Room
16. Dead Rising 2: Case 0
17. Peggle
18. Dungeons & Dragons: Daggerdale
19. Battlefield 1943
20. Beyond Good & Evil HD
This list has quite more variety in genres and releases. Popular older games like pinball, castle crashers and trials HD are still very high aswell as newer games like fruit ninja, toy soldiers, bastion and from dust.