I like that it builds on itself, and it gets really interesting later on. Here are some other opinions:
- I didn't find it useful to have a "continue/quit" button on every end screen. I think it would work well to seamlessly load the next "level", which would make it more like an endless runner. If I want to quit, I'll probably lose soon enough anyway :D
- The movement could be tuned a little more. I think if you decelerate faster, it would feel less "floaty" and give better precision.