I found it quite difficult to know which way the crates and heroes would go at first. Then once I'd figured that out, everything happened quite quickly. Cool puzzle idea, but I found it a little too difficult.
Great puzzler concept. It seems to be nondeterministic where things will move, though, which makes it difficult to plan ahead. Also the walls are a bit hard to see at first, and the inability to rotate counterclockwise adds to the difficulty. But if you have some more time to address these things, there's quite a good game here.
an easy and entertaining puzzle game :)