I love the game concept, and it was enjoyable enough that you nearly made me bust out my drawing tablet to see if I could beat my pb with it, (in the end laziness won, smh),
The only real complaint I have is that the music was too, lets say, invasive if that makes sense. While it didn't take away from the experience, I felt that it didn't quite fit.
Other than that, there's the inconsistent pixel sizes, which is a strong negative in my opinion, along with the ugly UI. However, these oversights are understandable when working in a game jam, so it's not too bad.
The working with the limitation, while it technically fit, and better than some I have played, feels sort of like avoiding it rather than working with it. I'll admit that is somewhat minor, but I wanted to say it anyway.
Overall, a strong submission, among the best I've played so far this jam! Sometimes simplicity is best, and picking a simple concept and flushing it out is better than trying to do as much mediocre things as possible, this game is a demonstration of that.