Crysis 2 continues to sell well, at least as a downloadable PC game. Crytek's latest entry in the sci-fi shooter series was the number one best selling game on Steam's download service last week. Pre-orders for Valve's Portal 2 came in second for the week while the Call of Duty Black Ops First Strike DLC map pack came in third.

The full top 10 sales list is as folllows:

1. Crysis 2 - Crytek/EA
2. Portal 2 - Valve
3. Call of Duty: Black Ops First Strike -Treyarch/Activision
4. Total War: Shogun 2 - The Creative Assembly/Sega
5. The Potato Sack - Various Indie Games
6. Shift 2 Unleashed - Slightly Mad Studios/EA
7. Rift - Trion Worlds
8. Darkspore - Electronic Arts
9. Dragon Age II - BioWare/EA
10. Call of Duty: Black Ops - Treyarch/Activision