We saw this one coming and so have you guys. NCsoft's MMO Aion topped PC sales charts in the US, according to statistics provided by NPD. Here's the full chart (thanks EdgeOnline):

1. Aion - NCsoft
2. The Sims 3- Electronic Arts
3. Champions Online - Atari
4. World Of Warcraft: Wrath Of The Lich King - Blizzard
5. Aion Collector's Edition - NCsoft
6. Mumbo Jumbo Assortment - Mumbo Jumbo
7. The Sims 2 Double Deluxe - Electronic Arts
8. World Of Warcraft: Battle Chest - Blizzard
9. Reel Deal Slots Treasures Of The Far East - Phantom EFX
10. World Of Warcraft - Blizzard
11. Spore - Electronic Arts
12. Grand Theft Auto IV - Take-Two
13. Starcraft: Battle Chest - Blizzard
14. Zuma's Revenge - PopCap
15. World Of Warcraft: Burning Crusade - Blizzard
16. Batman: Arkham Asylum - Square Enix
17. Reel Deal Slots Adventure - Phantom EFX
18. Nancy Drew: Ransom Of The Seven Ships - Her Interactive
19. Civilization IV: Complete Edition - Take-Two
20. The Sims 2 University Life Collection - Electronic Arts