The last one for this year, check the ten top selling titles on Steam for Christmas week as reported by Valve:
1. DayZ
2. The Elder Scrolls V: Skyrim - Legendary Edition
3. Starbound
4. Rust
5. PAYDAY 2
6. Borderlands 2 Game of the Year Edition
7. The Elder Scrolls V: Skyrim
8. Counter-Strike: Global Offensive
9. Assassin's Creed IV: Black Flag
10. Anno 2070: Complete Edition