Double Fine "rooting" for SteamOS, Paradox's EU4 and CK2 'should run natively'

Related Games:
Psychonauts, Brutal Legend, Crusader Kings II, Broken Age: Act One, Crusader Kings II: Sword of Islam, Europa Universalis IV, Crusader Kings II: Legacy of Rome, Crusader Kings II: Sunset Invasion, Crusader Kings II: The Republic, Crusader Kings II: The Old Gods, Massive Chalice
Source:
PC Gamer