All lists are based on World Wide Unique Users on Xbox Live. These lists are based on title usage (while connected to Xbox Live.)
Xbox 360 Top Games
1 Call of Duty 2
2 Saints Row
3 Madden NFL 07
4 Ghost Recon 3
5 Test Drive Unlimited
6 DOOM
7 DEAD RISING
8 Oblivion
9 BFMC
10 SONIC THE HEDGEHOG DEMO
Top Arcade Titles (Full Versions)*
1 DOOM
2 Texas Hold 'em
3 UNO
4 Hexic HD
5 TotemBall
6 Geometry Wars Evolved
7 Street Fighter II' Hyper Fighting
8 PAC-MAN
9 Marble Blast Ultra
10 Bankshot Billiards 2
*This only counts games that are purchased, not demos
Original Xbox Top Games
1 Halo 2
2 Battlefield 2: MC
3 Madden NFL 07
4 Counter-Strike
5 Pro Evolution Soccer 5
6 Splinter Cell Chaos
7 Rainbow Six 3 BA
8 Star Wars: Battlfrnt 2
9 Forza Motorsport
10 Rainbow Six 3