Decent puzzles, but the game feels horrible to play because of the controls. A tile-based game has no need for a physics system, and it makes controlling the robot slow and painful. The player should be able to move as quickly as they want by pressing buttons repeatedly, which doesn't work in this system. The physics engine also limits how many moves you can store in the undo buffer, which means you can only undo a certain amount before the game forgets what to undo next. Fun concept, but unless these issues are fixed I don't think the game is playable.