Divinity: Original Sin is a CRPG for PC and the prequel to 2001's Divine Divinity. Players can create two characters who serve as the protagonists of the story; another player can control the second character in the game's online co-op mode. The two heroes are tasked with rooting out the dangerous practitioners of a mysterious magical power called "the Source."
It is the first turn-based RPG entry in the series, where players control their characters on isometric maps across a variety of areas populated with reactive NPCs, enemies and environments. Players can interact with any object on the map not fixed in place and can use them in many ways to overcome the various challenges throughout the game.
Original Sin includes the same game editor used by the developers themselves to make the game, allowing players to create their own adventures which they can share with friends.