Even though Steam had a number of holiday sales this week, Valve's zombie co-op shooter Left 4 Dead 2 still managed to stay on top of Steam's latest top 10 best selling PC games list. The list, which rates games based on revenue, has Infinity Ward's FPS Modern Warfare 2 in, ironically, the number 2 slot for the week that ended on November 29.

THQs Complete Pack Bundle, which has 18 games ans is currently on sale for just $49.99, takes the third spot on this week's list. BioWare's regular and deluxe edition of Dragon Age: Origins have taken the fourth and fifth spots this week:

1. Left 4 Dead 2 - Valve
2. Modern Warfare 2 - Infinity Ward/Activision
3. THQ Complete Pack - THQ
4. Dragon Age: Origins - BioWare/EA
5. Dragon Age: Origins Deluxe Edition - BioWare/EA
6. Borderlands - Gearbox Software/2K Games
7. Batman: Arkham Asylum - Rocksteady/Eidos
8. Left 4 Dead - Valve
9. Serious Sam HD: The First Encounter - Croteam/CDV
10. Dead Space - EA