[Spoilers in the review, play Obra Dinn first, seriously the game is fantastic]
Return of the Obra Dinn is brilliant. I'm sure I'm not the only one that's looked at a photo and said something like 'I wish I could go inside here for a better look', this game more than satisfies that urge. The mystery solving is top-notch, and it's actually quite difficult, but it's the fair kind of difficult (most of the time). The artstyle is one-of-a-kind and I enjoyed toying with the different colour-schemes, it was clear who was who and what the things were supposed to be, all while looking minimalisticly simple. The main gameplay hook is so abstract and unorthordox, yet I understood it all without even thinking about it because the tutorial was so well done.
I did have some gripes, but for the most part this game was incredible. If I had to state some issues (and I'm trying hard to find them), then it's probably how unclear some things can be. I don't mean the 'check the crew's shoes' type of unclear, but the 'does the book mean "speared by a beast" or "spiked by a beast"?' type of unclear, it wasn't very frequent though, but it was kind of annoying, throw in the fact that one chapter is missing for the entire game and I found myself asking 'am I even able to figure this out now or not?'. Don't get me wrong though, I still think this game is fantastic and worth your time. And by the way, the book prefers 'spiked by a beast' ;).