Awesome game!
it's a great idea, and i enjoy sandbox games a lot, but there are a few things that bother me/ suggestions
-spam clicking to put down boxes
-still a little slippery when i play platform games...kind of
-MOAR BOXES :D
-more interactive tiles such as teleport or something
-vote kick
-usernames
otherwise, it is one of the best sandbox games i've ever played :)