Nice game. But after opening the money box, looks like the box overlaps with the game when it starts again:
I played the browser version.
Another thing I noticed: the game ends for the player, if the piece moves to a place where it can't move with the next move. But the computer can move in such a place, and the next level starts only, if the player moves, and then it is the computers turn. Should be the same behavior. I think would make more sense that a player loses only when it is his turn, and he can't move anymore (so the computer behavior).