The man behind Paper's Please apparently spent four years with the Unity Engine and has produced a game about being a magic insurance investigator for the East India Company. The Obra Dinn never made its cape rendezvous on a trip around Africa to the orient in 1804. In 1807 it shows up off the coast of England, crew missing or dead. You're put on board with a pocketwatch that lets you see and explore the last moment of a corpse's death and using dialogue, a diagram of the ship, a crew/passenger manifest, and a lot of deductive reasoning you've got to figure out who each of the sixty souls on board is, and how they died.
It's a delightful challenge and took me about six and a half hours over several nights, and a single page of notes. Most of the necessary note-keeping is made easy by the game's interface. Warning: The game makes it possible, though tedious, to figure certain things out by guessing. I recommend against it. There are clues available to decipher exactly who every single individual is. When the tutorial text talks about "process of elimination" it means there will be one person left within a particular category (and I'm being purposefully vague) and this happens several times. You do not need to guess between two or three possibilities.
If you can't figure out who somebody is yet, try to find another corpse, or go back to a previous one. Do things the hard way. Enjoy it. That's the whole game.
I'll also warn you that the graphics are... experimental. They look better in motion and I was less bothered by the game than I was by screenshots and trailers.
Anyway: Paper's, Please made me feel like a Soviet bureaucrat, and I loved it. Obra Dinn made me feel like a detective, and I loved it. Other than that the games have nothing in common. Take that as you will.