PC Sales: Aion, Left 4 Dead 2 Top the Charts

NCsoft's fantasy MMO Aion was the biggest PC seller at retail in September, according to NPD's new data for the month. EA Maxis' The Sims 3 and Cryptic's superhero MMO Champions Online rounded out the top three.

Left, Aion. Right, Left 4 Dead 2.

On the order of more recent sales data, Left 4 Dead 2 captured the top spot on the Steam sales list last week, edging out Gearbox's just-released Borderlands and BioWare's upcoming RPG Dragon Age: Origins. Check out both charts below.

NPD US retail sales for the month of September:

1. Aion

2. The Sims 3

3. Champions Online

4. World of Warcraft: Wrath of the Lich King

5. Aion Collector's Edition

6. Mumbo Jumbo Assortment

7. The Sims 2 Double Deluxe

8. World of Warcraft: Battle Chest

9. Real Deal Slots Treasures of the Far East

10. World of Warcraft

11. Spore

12. Grand Theft Auto IV

13. Starcraft: Battle Chest

14. Zuma's Revenge

15. World of Warcraft: Burning Crusade Expansion Pack

16. Batman: Arkham Asylum

17. Reel Deal Slots Adventure

18. Nancy Drew: Ransom of the Seven Ships

19. Civilization IV: Complete Edition

20. The Sims 2 University Life Collection

Steam sales for the week of 10/11-10/17:

1. Left 4 Dead 2

2. Borderlands

3. Dragon Age: Origins

4. Dragon Age: Origins Deluxe Edition

5. Operation Flashpoint: Dragon Rising

6. Sid Meier's Civilization IV: The Complete Edition

7. Aion

8. Warhammer 40,000: Dawn of War II

9. Saints Row 2

10. Cities XL Limited Edition

11. Left 4 Dead

12. Counter-Strike: Source