Just completed this. Its fun and it's cool it's a puzzle focused shoot'em up, but it get quite repetitive around half way in. Also sucks the game has an xp system so you can't just rush through levels or you most likely will not have enough to unlock all levels (had to replay levels even though I was playing pretty thoroughly for most of my playthrough).

Game is simple enough though that I could listen to stuff in the background while playing which helped me go through till the end.