NPD PC Top 20
1. World Of Warcraft: Wrath of the Lich King
2. The Sims 2 Double Deluxe
3. World Of Warcraft: Battle Chest
4. Spore
5. World Of Warcraft
6. Left 4 Dead
7. The Sims 2 Apartment Life
8. Fallout 3
9. Command & Conquer: Red Alert 3
10. Call Of Duty: World At Wars
11. World Of Warcraft: Burning Crusade
12. Civilization IV
13. The Sims 2 Mansion & Garden Stuff
14. Spore Creepy & Cute Parts Pack
15. IGT Slots: Little Green Men
16. The Sims 2 Pets Exp.
17. StarCraft Battle Chest
18. Bejeweled Twist
19. Reel Deal Slots BlackBeard's Revenge
20. The Sims 2 FreeTime Exp.

(Source : NPD)