Activision and Infinity Ward's Call of Duty 4: Modern Warfare on the Microsoft Xbox 360 continues to dominate the Xbox Live activity chart for the week ending March 17, followed by the top ten mainstay Halo 3 from Bungie Studios. Usual prospects are showing strong legs, but newcomers Tom Clancy's Rainbow Six Vegas 2 and Army of Two managed to make it to the list.

On the other hand, the recently released budget title Brain Challenge came in as the most purchased game from the Xbox Live Arcade. Doom remains a classic with enough purchases to propel it to the number two spot, while the action platformer N+ is trailing close behind.

Without further ado, here are the lists:

Xbox 360 Top Live Titles

1. Call of Duty 4
2. Halo 3
3. Guitar Hero III
4. Tom Clancy's Rainbow Six Vegas 2
5. Gears of War
6. Rock Band
7. Army of Two
8. Forza Motorsport 2
9. Tom Clancy's Rainbow Six Vegas
10. FIFA 08

Top Arcade Titles (Full Versions)

1. Brain Challenge
2. DOOM
3. N+
4. Assault Heroes
5. UNO
6. Worms
7. TMNT 1989 Arcade
8. Bomberman LIVE
9. Sonic The Hedgehog 2
10. Marble Blast Ultra