Very very fun puzzle game, though I'll say that controls on keyboard feel a bit awkward, for one you can't use menus with the mouse, and I'd like to be able to use the arrow keys for movement since it'd make rotating easier. Also, I feel the amount of blocks that need to fall off to make you lose should have a proper visual indicator, like a meter that gradually falls unless you're losing mass. Still though, incredibly polished, very fun, and absolutely worth playing.