Per its weekly tradition, research firm NPD has provided its regular update on the sales of PC software at North American retailers, this time covering July 27 to August 2.

After topping the charts for the past few weeks, Her's Nancy Drew was bested by EA Maxis' regular chart resident The Sims 2 Double Deluxe. Both EA and Blizzard continued their usual domination, with each responsible for 4 of the week's best sellers.

1. The Sims 2 Double Deluxe / EA Maxis / $30 (Average)
2. Nancy Drew: The Phantom Of Venice / Her Interactive / $19 (Average)
3. World Of Warcraft: Battle Chest / Blizzard / $39 (Average)
4. Spore Creature Creator / EA Maxis / $10 (Average)
5. World Of Warcraft / Blizzard / $20 (Average)
6. The Sims 2 IKEA Home Stuff Expansion Pack / EA Maxis / $20 (Average)
7. Diablo Battle Chest / Blizzard / $39 (Average)
8. Call Of Duty 4: Modern Warfare / Infinity Ward / $43 (Average)
9. World Of Warcraft: Burning Crusade Expansion Pack / Blizzard / $30 (Average)
10. The Sims 2 FreeTime Expansion Pack / EA Maxis / $30 (Average)