Thanks for the sincere comment! Although remember that this is a jam game with limited time worked on and multiple different members.
The level design is definitely one of my biggest regrets, I used an artist's draft design as a guide to draw the cave on top, and I didn't think about how small it would actually be to play in.
Asset works (art, music, SFX) were made by other members, so I can't comment on that. But I never knew about pitch randomizing, thanks.
The BG was tough, because I was given BGs that didn't fit into the level well, so I tried to speed them up a bit to at least be able to show more of the BG.
The menu had music and you can use arrow up/down to select different options. Suika's 3 heights are used instead of a traditional arrow/highlight, as if she is looking directly forward at the currently-selected option. But if you use mouse controls then it's not there.