This was a really fun and cute game!
I think the weakest point of this game was the menu and the UI. Not the elements (actually I was very impressed you have a volume slider), but the visual design. The menu fonts, colors, and textures kind of looks like something I would have made in powerpoint as a kid. The UI home and reset buttons are both very useful (thank you for including them), but they're kind of big and get in the way of the game.
The design of the squares, however, is quite nice! I like their faces and how each square spawned is a random color. I absolutely loved how to squares would sometimes do little flips as you jumped.
You managed to get a lot of levels and a nice ideas out of one simple "touch orange=die" mechanic. The first level I had to jump into an orange block to die in mid-air, and the first level with a pellet gun both presented new applications of the mechanic I hadn't thought of.
Overall, it's a fun game that gets great use out of its simple mechanic! If you clean up the visuals a bit, you'll have something really great. I noticed that you made this in 24 hours instead of the full 3 days. Great job!