The NPD Group has released their weekly sales figures for the week of October 5 - 11. It appears as though that the newcomer, Nancy Drew: The Haunting of Castle Malloy, made a very strong first showing on the list.
Source
1. Spore / EA Maxis / $49 (Average)
2. Nancy Drew: The Haunting of Castle Malloy / Her Interactive / $18 (Average)
3. Warhammer Online: Age of Reckoning / EA Mythic / $49 (Average)
4. Civilization IV: Colonization / Firaxis / $29 (Average)
5. The Sims 2 Apartment Life Expansion Pack / EA Maxis / $30 (Average)
6. World Of Warcraft: Battle Chest / Blizzard / $39 (Average)
7. The Sims 2 Double Deluxe / EA Maxis / $30 (Average)
8. World Of Warcraft / Blizzard / $20 (Average)
9. Brothers in Arms: Hell's Highway / Gearbox / $49 (Average)
10. Crysis Warhead / Crytek (Publisher: EA) / $29 (Average)
Blizzard and EA continues their trend of strong week after week sales.2. Nancy Drew: The Haunting of Castle Malloy / Her Interactive / $18 (Average)
3. Warhammer Online: Age of Reckoning / EA Mythic / $49 (Average)
4. Civilization IV: Colonization / Firaxis / $29 (Average)
5. The Sims 2 Apartment Life Expansion Pack / EA Maxis / $30 (Average)
6. World Of Warcraft: Battle Chest / Blizzard / $39 (Average)
7. The Sims 2 Double Deluxe / EA Maxis / $30 (Average)
8. World Of Warcraft / Blizzard / $20 (Average)
9. Brothers in Arms: Hell's Highway / Gearbox / $49 (Average)
10. Crysis Warhead / Crytek (Publisher: EA) / $29 (Average)
Source