I'm terrible at puzzle games so this had me scratching my noodle pretty fast. The sticky block feature really makes for some hard to get at first puzzle solutions. Really good puzzle design.
Some music and SFX would have really beefed up the experience, though that can be tough to do in a 48 hour jam and it's better to have no sounds than bad/annoying ones!
Minor note: The small resolution made the control text on the first screen tough to see for someone with meh eyesight.
Good work!