Here's Valve's list of the 10 bestselling games on Steam for this week, influenced, of course, by the kickoff of the Steam Summer Sale:
1. Sid Meier's Civilization V: A Brave New World
2. BioShock Infinite
3. Borderlands 2
4. The Elder Scrolls V: Skyrim Legendary Edition
5. Borderlands 2 Season Pass
6. Civilization V Gold Edition
7. Tomb Raider
8. Left 4 Dead 2
9. The Walking Dead
10. Half-Life Complete