Very cool game, I definitely would have expected a shmup if I hadn’t read your description, but was still surprised to find it much more of a puzzle game. I only played the web version, so it’s a shame the UI didn’t render properly, but I could see from the screenshots how it was supposed to look. I think a simpler first level might have been better to introduce the mechanics, but the levels were well designed and I had fun working out where the safe spots were. I think adding some background music and explosion sfx would really enhance the experience!