Amazon has 2K Digital PC Deals live at their site.
Borderlands 2 $5
Borderlands Game of the Year Edition $7.50
Borderlands: The Pre-Sequel $20
Evolve PC $20
Sid Meier’s Civilization III: Complete $1.25
Sid Meiers Civilization IV: The Complete Edition $7.50
Sid Meier’s Civilization V $7.50
Sid Meier’s Starships $7.50
Sid Meier’s Starships/Civilization: Beyond Earth Bundle $25
Plus more deals…