It's Civilization Beyond Earth, but it isn't considered a very good game by many (sorry). The Papal faction is a mod you can download in the Steam Workshop.
Edit: Ninjaed xD
Civ: BE really isn't that bad, but its not a full price $50 game, I feel like that is the real issue with it, its basically just an over priced total conversion mod to Civ 5 where they had some neat ideas that pretty much didn't work out, hopefully things will get better with its expansion although there are alot of issues, factions feel generic because they are all completely made up, so they don't seem to have as much personality as Civ 5 factions did, not to mention quantity difference, tech web while a neat idea is both intimidating and confusing at first and then quickly becomes boring as entire sections of it get ignored while you rush affinities, very limited diplomacy and things like luxury resources which at least gave you a reason to keep relations good in Civ 5 just don't exist, not to mention no sort of UN mechanic either. Wonders and the normally cool quotes that come with them feel less impress as both the wonders and the quotes are now made up instead of having been real things and actually real good quotes being used
Again all these would probably be excusable if this was like a $15-$20 expansion/mod to Civ 5 but its not, its marketed as a full $50 game, might have been more at release I'm unsure,