This week, the Dead Rising Demo has risen to the third place spot, while the actual game is in 10th place...  Even though they separate the lists now, Major points out that Halo 2 would still be in the #1 spot...  Perhaps Gears of War will be the first game to knock off the 2004 title...

As always, this list courtesy of MajorNelson.com

Xbox 360 Top Live Games
1 Call of Duty 2
2 Ghost Recon 3
3 Dead Rising Demo
4 Chromehounds
5 Oblivion
6 Final Fantasy XI
7 Saints Row Demo
8 NCAA 07
9 BFMC
10 Dead Rising

Original Xbox Top Live Games
1 Halo 2
2 Battlefield 2: MC
3 Splinter Cell Chaos
4 Counter-Strike
5 Rainbow Six 3 BA
6 Pro Evolution Soccer 5
7 Star Wars: Battlfrnt 2
8 Madden NFL 2006
9 Forza Motorsport
10 Rainbow Six 3