I liked it, it is well thought, at first I thought it was going to be too simple, but the collisions are solid and they felt fair, and I loved the self-configurable difficultly, such a nice change for a Jam, so I could learn it first and then make it challenging! :-D The controls were a bit awkward at first, but I am guessing it is optimized for touchscreen play, which makes total sense (not an issue)! The only thing I would change is the background, being a bit distracting from the bullets- not sure how to improve that (slowing the scrolling? Having less contrast? Overall, I enjoyed it!