This accomplishes one of the best things about puzzle games -- teaching the player smoothly and fluidly. I had just a tiny moment of confusion with the gravitational ability on pick up, but everything else felt like the right pace of progression. Would have loved to see it all come together for an ending, but encountering a giant [redacted] was pretty nice too. Multiple endings are always fun and I think you nailed the humour level. Couldn't figure out the "Don't make a physics based game for a Game Jam" Ending although I'm intrigued by the name -- I did try to clip through the ceiling by jumping on an antigravity box over and over.
p.s. im keeping my $13 dollars