[Psitticine]

In a nutshell, it is a turn-based strategy game where you try to lead a "Pretender God" to a position of supreme promenence following the disappearing of the previous supreme being. You need to spread your Dominion (the strength of your follower's belief in you) in addition to conquering new provinces for their various forms of income.

That's just the tip of the iceberg though. There's a huge amount of content in the game!