Remember, NPD's list only accounts for brick and mortar stores in the United States and does not include digital distribution. Meanwhile, Direct2Drive's chart only represents one of many online digital download platforms.

NPD's Top Ten (3/8 - 3/14)

1. Empire: Total War / Creative Assembly / $49
2. World Of Warcraft: Wrath of the Lich King / Blizzard / $39
3. The Sims 2 Double Deluxe / EA Maxis / $20
4. Warhammer 40K: Dawn of War II / Relic / $49
5. World Of Warcraft Battle Chest / Blizzard / $40
6. World Of Warcraft / Blizzard / $20
7. The Sims 2 Apartment Life Exp. Pack / EA Maxis / $20
8. Spore / EA Maxis / $50
9. Mystery Case Files: Return to Ravenhearst / Big Fish Games / $20
10. Command & Conquer: Red Alert 3 / EA LA / $25

Direct2Drive's Top Ten (3/8 - 3/14)

1. Command & Conquer 3: Red Alert - Uprising / EA LA
2. Empire: Total War / Creative Assembly
3. World in Conflict: Soviet Assault Expansion / Massive
4. Warhammer 40K: Dawn of War II / Relic
5. World in Conflict Gold Edition / Massive
6. Rome: Total War Gold Edition / Creative Assembly
7. Empire: Total War - Special Forces Edition / Creative Assembly
8. Warhammer Online: Age Of Reckoning / EA Mythic
9. MLB 2K9 / Visual Concepts
10. Final Fantasy XI Vana'diel Collection 2008 / Square Enix