Fantastic game! The graphics were minimal, but were really polished and cohesive. Instructions were clear and I liked the seamless transition from "try out the buttons" to gameplay. The first time I played this I found it impossible. Tried again and I realized that I could control the speed of orbits... for some reason I thought that would be proportional to the size of the orbit. It seemed like you had to tap A and D to change the speed and couldn't just hold them? If so, I'd update it so holding them is an option to quickly go between max and min speeds.
Great variety of baddies and movement. I found playing with multiple rings to be way more fun, but also slightly easier than the one ring. That single ring is anxiety inducing!
Music was cool, sound effects were good.
Great work on this ddrosler!