I was confused.
I did figure out how to jump. I looked in the options and saw that x, a, and b were supposed to do something. I was not clear what the equations on the screen were supposed to be or how the controls were related to them. This is definitely a game that could benefit from a tutorial.
That said, when I had a jump that went well, it was extremely fun and kinda made up for the many dozens upon dozens that didn't. I have no idea why sometimes I jumped very far and other times seemed to barely move at all, but it seems like the core gameplay is fun when it works. It's just too hard to figure out what you are doing or even how to do it.
I still feel curious about the game because surely there's something good in here, I just couldn't figure it out.