Wow 233MB! That's kind off insane for a game of this scale.
I didn't encounter any bugs so that's nice! Wish there were sound effects/music. I found the platforming pretty alright for a 3d game like this, but it needed a shadow showing where you're going to land. Feels a bit like wipeout, in a good way. I was able to cheese the ending by just getting really small and then jumping to the crown. I got all the way to the rails through legit means but got frustrated when I fell due to bouncing off the wall so just went for the crown directly. A little light on the theme usage. I wish there were more levels!