I've gotten to where two sets of vertical bars spawn (blue and purple) and I guess my main feedback is that I don't think the gap should be able to be so high up. Get up there and get hit by a regular purple orb spawning on top of me most of the time. Unavoidable damage feels really bad in a game like this. I guess if you had a spawn indicator for the purple orbs that would work too, not a warning but like them fading in using particles for instance. But that would be more work.