Rank This Month		Rank Last Month		Title	Publisher
1			PC Aion		NCsoft
2	1		PC The Sims 3		Electronic Arts
3			PC Champions Online		Atari
4	2		PC World Of Warcraft: Wrath of the Lich King Expansion Pack		Blizzard Entertainment
5			PC Aion Collector’s Ed		NCsoft
6	4		PC Mumbo Jumbo Assortment		Mumbo Jumbo
7	3		PC The Sims 2 Double Deluxe		Electronic Arts
8	6		PC World Of Warcraft: Battle Chest		Blizzard Entertainment
9			PC Reel Deal Slots Treasures Of The Far East		Phantom EFX
10	8		PC World Of Warcraft		Blizzard Entertainment
11	9		PC Spore		Electronic Arts
12			PC Grand Theft Auto IV		Rockstar Games (Take 2)
13	11		PC Starcraft: Battle Chest		Blizzard Entertainment
14			PC Zuma’s Revenge		PopCap Games
15	13		PC World Of Warcraft: Burning Crusade Expansion Pack		Blizzard Entertainment
16			PC Batman: Arkham Asylum		Eidos
17	19		PC Reel Deal Slots Adventure		Phantom EFX
18	10		PC Nancy Drew: Ransom Of The Seven Ships		Her Interactive
19	17		PC Civilization IV: Complete Ed		2K Games ( Take 2)
20			PC The Sims 2 University Life Collection		Electronic Arts

 Chart courtesy:

The NPD Group