The game seems buggy, which is why it's harder to understand, what is the goal. Sometimes the characters would pick up the box, sometimes not, sometimes the box gets stuck, but I think I get the idea. You went for a more complex game, so 3h might have been too little, well done nonetheless :)

Aside from the other comments I like that my head goes into a zen mode trying to get them both working together at the same time

Didn't really understand it but I like the idea of making 2 player co-op game

Cool, i only managed to clean 14 block, and then the white player refusing to pickup block. idk why.

Fun but repetitive. Somehow challenging to play alone and be efficient.

Like the idea but it gets  a little repetitive