Man what an interesting idea. Took me a few tries to figure out that there was like a global timer that I could predict. I died from debris quite a few times, and I think the mechanic needs to be explained a bit and maybe some work done in the UI (I didn't figure out at first that it bounced back and forward) but concept is really cool and pretty trippy too.
Definitely could do some polish, sounds, etc because the actual visual vibe is also quite intense but it's missing something. Theres a strong vibe here to build on.
Great idea, and one of the more unique gameplay mechanics I've seen for sure. Nice work!