Very simple, but also really fun to play. Nice job!
I don’t know if you plan to work on this further, but if so you might try out some music that loops seamlessly as it would help things feel even more hypnotic. It could also be interesting/more challenging to have some of the things you are trying to avoid move at different speeds. Maybe adding some things you can collect that would give you special bonus (points?) or shift game play a little bit (like change how gravity works temporarily?). Lots of things to explore and try out, which is great because it means you have a good foundation to build on. Nice!