Official website: http://www.firaxis.com/

 
8.3
Sid Meier’s Civilization IV: Colonization

 
X-COM 2

 
XCOM 2: Tactial Legacy

 
8.0
Sid Meier’s Civilization V: Korea and Wonders of the Ancient World – Combo Pack

 
8.0
XCOM 2: War of the Chosen – Tactical Legacy Pack

 
5.0
XCOM 2: War of the Chosen – Propaganda Center

 
6.0
Civilization VI – Australia Civilization & Scenario Pack

 
8.0
Sid Meier’s Civilization: Beyond Earth Exoplanets Map Pack