Some Weekend deals at Get Games.
- Sid Meier’s Civilization V: Gods and Kings = $21.89
- Sid Meier’s Civilization V = $7.49
- Dungeon Siege 3 and Treasures of the Sun bundle = $6.99
- Dungeon Siege III = $4.99
- Dungeon Siege III: Treasures of the Sun DLC = $1.99
These all use Steamworks.