It's good to be working at Blizzard. The massive PC game developer continues to rule as its various games sell, sell and sell more copies. The NPD Group's list of the top 20 best selling PC games for April 2009 (via info from US retail stores) shows that Blizzard-published titles took up a full third of the games on the list

Also of note are two strong debuts for Company of Heroes: Tales of Valor at number four and Demigod at number 6. And an ultra-cheap price point has put Illusion Softworks' 2004 released WWII shooter Hidden And Dangerous II at the number 20 slot.

1. World Of Warcraft: Wrath of the Lich King - Blizzard
2. The Sims 2 Double Deluxe - Electronic Arts
3. World Of Warcraft Battle Chest - Blizzard
4. Company of Heroes: Tales of Valor - Relic/THQ
5. Empire: Total War - Creative Assembly/Sega
6. Left 4 Dead - Valve
7. Demigod - Gas Powered Games/Stardock
8. Diablo Battle Chest - Blizzard
9. The Sims 2 Apartment Life - Electronic Arts
10. Spore - Electronic Arts
11. Warcraft III Battle Chest - Blizzard
12. StarCraft Battle Chest - Blizzard
13. World Of Warcraft: Burning Crusade - Blizzard
14. Warhammer 40, 000: Dawn of War II - Relic/THQ
15. World Of Warcraft - Blizzard
16. The SimCity Box - Electronic Arts
17. Bejeweled Twist - PopCap Games
18. Fallout 3 - Bethesda Softworks
19. The Sims 2 Pets - Electronic Arts
20. Hidden & Dangerous 2 - Illusion Softworks/2K Games