I like the ambiance of this game. Clearing a level feels great thanks to the transition. The game is smooth, the levels are interesting. Three small details I would improve : I found the sound effect of the directional boost block to be a little bit off (it felt a bit 8-bit ish or something). I would make the music loop. Finally I would have added a simple text like "Thanks for playing" at the end of level 8, it's a small thing but it would really add this feeling of "this is a finished game I just played".