Digital download services are slowly replacing the old game stores and Steam has become one of the major forces in the digital download area. Of course, game sales can’t go well without good games to spend the money on and I must say that fortunately 2011 was, so far, pretty full of quality releases.

Therefore, I am sure that you’re really curious to find out which were the best selling games in 2011 on Steam (so far), so check out the list below:

1. Portal 2 (Valve) – 1,128,000 Units Sold ($56.4 Million USD)
2. Magicka (Paradox Interactive) – 789,000 Units Sold ($6.2 Million USD)
3. Terraria (Re-Logic) – 580,000 Units Sold ($5.8 Million USD)
4. Counter-Strike (Valve) – 399,000 Units Sold ($2.7 Million USD)
5. Total War: Shogun 2 (SEGA) – 326,000 Units Sold ($15.1 Million USD)
6. Monday Night Combat (Uber Entertainment) – 264,000 Units Sold ($2.9 Million USD)
7. Brink (Bethesda Softworks) – 256,000 Units Sold ($13.5 Million USD)
8. Battlefield: Bad Company 2 (Electronic Arts) – 250,000 Units Sold ($4.2 Million USD)
9. Warhammer 40,000: Dawn of War II – Retribution (THQ) – 224,000 Units Sold ($13.0 Million USD)
10. Borderlands (2K Games) – 204,000 Units Sold ($1.6 Million USD)

Some really nice money have been made here, with some nice entries from Indie Titles like Magicka and Terraria, plus the surprising evergreen Counter Strike.

How make Steam titles did you purchase this year?