Every week of April, Blizzard was kicking ass in PC sales here in the States so it's no surprise that they'd have an equally solid showing for the monthly figures. Here are the top 20 sellers for the month of April, courtesy of the NPD. Be warned, only one of them's an actual surprise:

1. World Of Warcraft: Wrath of the Lich King (Blizzard)
2. The Sims 2 Double Deluxe (EA Maxis)
3. World Of Warcraft Battle Chest (Blizzard)
4. Company of Heroes: Tales of Valor (Relic)
5. Empire: Total War (Creative Assembly)
6. Left 4 Dead (Valve)
7. Demigod (Gas Powered Games)
8. Diablo Battle Chest (Blizzard)
9. The Sims 2 Apartment Life Exp. Pack (EA Maxis)
10. Spore (EA Maxis)
11. Warcraft III Battle Chest (Blizzard)
12. StarCraft Battle Chest (Blizzard)
13. World Of Warcraft: Burning Crusade Expansion Pack (Blizzard)
14. Warhammer 40K: Dawn of War II (Relic)
15. World Of Warcraft (Blizzard)
16. The SimCity Box (EA)
17. Bejeweled Twist (PopCap Games)
18. Fallout 3 (Bethesda)
19. The Sims 2 Pets Exp. Pack (EA Maxis)
20. Hidden & Dangerous 2 (Illusion Softworks)

The "Battle Chest" bundles for World of Warcraft, Warcraft III, StarCraft, and Diablo all made the list. It's good to be the King. The 2004 World War II shooter Hidden & Dangerous 2 wins the award for "Most Random Game To Break Into The Top Sellers List."