The idea of putting a quick tutorial in the game is nice, especially with a relatively complex game such as this one compared to others in the jam.
You've managed to put multiple movement options in the game with just one button press as well as an interesting gravity+pressure mechanic, although holding the box and activating the gravity switches is finicky and often makes the player drop the box.
Something missing would be a pause menu, especially since I managed to softlock the game and had to close it to restart.