First of all, this game is insanely polished. I honestly have no idea how you'd make something this good in such a short amount of time. Also the game fits the theme in a really fun way. Reminds me of those pipe rotating puzzles in some games. The art style/color palette is super fun and simple and compliments the music. The super satisfying sound effects makes the game feel responsive and reminds me of Balatro. It's crazy good and I would love to see more from it! I do think that the timer should be optional though Because the puzzles are a little confusing at times, either having a photo of the completed puzzle or having a pausing period where you could plan out your moves beforehand would make the game a lot less stressful and would work well for slower audiences.
TL;DR: Art, graphics, and sound are all fantastic and responsive and the gameplay is super fun! Only real flaw is the timer being there with no extra help or no planning period.