I Wanna Be the Unknown
Highly recommended to anyone who is good at adventure games. I believe it will be a unique experience.
The bosses, on the other hand...Well, some are enjoyable, or at least fair. And some are...No, just no. Freudia is a good example. You are doing fine with your normal jumps, and then suddenly you automatically switch to the gravity-changing mode, and Freudenzwinger kills you again, and there's nothing you can do about it. Or the first avoidance and its casual waves of impossible RNG. The last boss was surprisingly enjoyable and fair, though, even though it was still hard.
There's a medley stage near the end, and I really wish it wasn't there, most screens are extremely annoying (There's a screen from Symmetry there. The original one was already annoying as hell, but this one is filled with traps, which makes things ten times worse. And the other screens aren't much better). I prefer to think that this stage never existed at all.
Overall, it's a game with an amazing platforming, and even though the bosses aren't that amazing, it's still a great game. Highly recommended.