Enticing weekend Steam sales also saw several titles shoot up to the top of Valve's list. The 50% off sale of Fallout 3 drew enough gamers to put it at the top of the charts, while the 2K Huge Games Pack saw plenty of action. Meanwhile, Frozenbyte's lauded fantasy platformer Trine debuted in ninth position on the Steam chart, beating out Counter-Strike: Source, which usually charts in the middle of the pack.

The weekly top ten sellers for both distributors follow:

Direct2Drive's Top Ten (6/28 - 7/4)

1. ArmA 2
2. Aion: Tower of Eternity
3. The Sims 3
4. The Sims 3 (Mac)
5. Dawn of Discovery
6. Call of Duty 4: Modern Warfare
7. Call of Juarez: Bound in Blood
8. Overlord 2
9. Civilization 4: Complete Edition
10. Fallout 3

1. Fallout 3
2. ArmA 2
3. Dawn of Discovery
4. 2K Huge Games Pack
5. Street Fighter IV
6. Left 4 Dead
7. Call of Juarez: Bound in Blood
8. Overlord 2
9. Trine
10. Counter-Strike: Source