If you enjoy a challenge with puzzle games, you will enjoy this. By far one of the most difficult ones I've dealt with in a while!
Every puzzle is surprisingly different from the last - there is rarely a theme followed. Mechanics, once briefly introduced, are ignored for some time before creeping back on you when you're finally desperate enough to reexplore them. The game is also kind enough to offer a step-by-step undo feature, as sometimes it is a single step that lead to failure.
I'm proud to say I haven't finished this game, no where near it, in fact. It's reached a point early on already where a single puzzle can take me 15-20 minutes, and it WILL be getting harder. Definitely a game I'll be willing to keep in the background for rainy days for the satisfaction of finishing a single level.

Baba is you.

Really fun reality breaking puzzle game