Interplay recently released a "Fallout Trilogy" bundle of Fallout, Fallout 2, and Fallout Tactics to stores and the move has paid off. The compilation was one of the top selling PC games for the week of April 26th to May 2nd, according to the NPD Group:

1. World Of Warcraft: Wrath of the Lich King (Blizzard)
2. The Sims 2 Double Deluxe (EA Maxis)
3. Left 4 Dead (Valve)
4. World Of Warcraft Battle Chest (Blizzard)
5. Empire: Total War (Creative Assembly)
6. World Of Warcraft (Blizzard)
7. Fallout Trilogy (Interplay)
8. Demigod (Gas Powered Games)
9. The Sims 2 Apartment Life Exp. Pack (EA Maxis)
10. Spore (EA Maxis)

Another solid week for Left 4 Dead, too. The downloadable content's really caused a boost in sales, it seems. Demigod has been slowly slipping down the charts since its debut at #3 in mid-April but is doing pretty well against heavy-hitters like Blizzard and EA Maxis.