Activision Blizzard’s World Of Warcraft: Wrath Of The Lich King has topped the US PC chart for the fourth week running.

The WOW expansion again placed ahead of The Sims 2 Double Deluxe, while Left 4 Dead moved up one spot to third, swapping positions with World Of Warcraft: Battle Chest during the week ended May 2.

Empire: Total War was a non-mover at number five, ahead of World Of Warcraft and Fallout Trilogy.

Demigod slipped two spots to number eight, while The Sims 2 Apartment Life Expansion Pack leapfrogged Spore to place ninth, according to the NPD Group.

1. World Of Warcraft: Wrath of the Lich King (Activision Blizzard)
2. The Sims 2 Double Deluxe (Electronic Arts)
3. Left 4 Dead (Electronic Arts)
4. World Of Warcraft: Battle Chest (Activision Blizzard)
5. Empire: Total War (Sega of America)
6. World Of Warcraft (Activision Blizzard)
7. Fallout Trilogy (Interplay)
8. Demigod (Stardock)
9. The Sims 2 Apartment Life Expansion Pack (Electronic Arts)
10. Spore (Electronic Arts)