Nice one! I liked the movement and grabbing/throwing the boxes do feel pretty good.
One thing that kinda threw me off was the controls tho, don't now exactly what keyboard you use but for me was kinda hard to get used to. I think if you picked-up and threw the boxes with same key (space) it would be even more satisfying to throw stuff around.
Also restart being in the middle of two other action keys made it even hader to grasp.