This is probably the best game from the jam I've played yet. The artstyle is super adorable, the dynamic soundtrack is super great. The tune is an absolute banger, with a simple catchy melody, and super fun and snazzy chords. The main mechanic is super simple but super fun, and it fits the theme perfectly. The mechanic isn't perfectly fleshed out though; the triangle could have been used in more interesting ways, and the hexagon just functions as a second square. But it's still really good, and super impresve for a 7 day jam.
I'd rate it a 9.8/10.