The NPD Group's latest list of best selling retail PC games covers the entire month of January 2009. There's a lot of familiar names on this list if you have been following our coverage of NPD Group's weekly top 10 listings, plus some casual games that never make it to the top 10. As usual, Electronic Arts and Blizzard games dominate the list.1. World Of Warcraft: Wrath of the Lich King - Blizzard
2. The Sims 2 Double Deluxe - Electronic Arts
3. World Of Warcraft: Battle Chest - Blizzard
4. Spore - Electronic Arts
5. World Of Warcraft - Blizzard
6. Left 4 Dead - EA/Valve
7. The Sims 2 Apartment Life - Electronic Arts
8. Fallout 3- Bethesda Softworks
9. Command & Conquer: Red Alert 3 - Electronic Arts
10. Call Of Duty: World At War - Activision
11. World Of Warcraft: Burning Crusade - Blizzard
12. Civilization IV - Firaxis/2K Games
13. The Sims 2 Mansion & Garden Stuff - Electronic Arts
14. Spore Creepy & Cute Parts Pack - Electronic Arts
15. IGT Slots: Little Green Men - Masque
16. The Sims 2 Pets - Electronic Arts
17. StarCraft Battle Chest - Blizzard
18. Bejeweled Twist - PopCap
19. Reel Deal Slots BlackBeard's Revenge - Phantom EFX
20. The Sims 2 FreeTime - Electronic Arts

