I didn't get very far, but I enjoyed what I played for the most part! Not sure if this was intentional, but the movement feels a bit fast. I think I would have had an easier time if the player movement was a bit slower. The other thing I wanted to mention is the order in which you deposit the boxes doesn't seem to matter. If I deposited the fourth box before all the others, instead of putting the box in the first slot, it automatically puts it in the fourth slot. This breaks the importance of order and incentivises the player to just target the closest box. Otherwise, this was a good submission, congrats!