This was an excellent game, and a unique take on the jam's theme! Your pixelated graphics were charming, and your UI was extremely elegant (Hands off to your girlfriend for making them). You also had some really well done post processing and they really highlighted things and made things look great. You've also got some absolutely fabulous transitions that I love so much, and your gameplay was innovative and fun.
The only thing I would suggest is that the gameplay feels a tiny bit too slow; it would be really nice for it to ramp up a bit more over time (for example introducing new blocks or increasing the speed).
This is a super cool submission and I had a great time playing it. Best of luck to you for the rest of the jam!