I don't think I'll be able to finish this before the end of the voting period (I got stuck on a screen last time I played, and also I should get some sleep soon), but here are some thoughts so far:
• I like the artstyle
• One of the rooms had a full-screen flicker which I didn't like as much (also for some people might cause seizures?)
• Physics seem janky (like I get caught on random things)
• Every time I click a button I have to then click outside the buttons, otherwise the game interprets space bar as both pressing a button and jumping.
• Main mechanic seems interesting (like you're taking size from the blocks... except it seems you can enlarge yourself from a block that's already at minimum size)