No Jumping!

WARNING: DO NOT TURN THE EXTENDING CUBE ON IT'S SIDE. It breaks the game  for some reason and you can't pick it up anymore, this would soft lock you if you don't have another cube. Tip: Use another cube to get a cube out of a hole. This also works with getting the extending cube facing upwards again. Tip: You can step up an extending cube(and only the extending cube) without a hole, and this would…