After about 40-ish minutes of pain & confusion, I finally added reversible gravity, as well as almost doubling the block count from 57 to 98.

Pretend that every gravity invert I pressed q, because that's the debug shortcut I used.

Sometimes, if the conditions are met, you might manage to get Joe stuck in the ceiling/floor/whatever (demonstrated around 0:30), but that's fixable by having Joe jump. Not sure how to prevent joe from getting stuck.

I added changeable size, but only as debug for now. For some reason at sizes of 95 and above the game starts to lag, but I'm not planning on having Joe be that huge.

I'm not even done with the title screen yet.