As long as the limit of the bomb strapped to the appropriate location, then press the lower right BOOM detonated a bomb, destroying the building under blue if the wreckage below the standard line, you can cross the border. If you feel that a single bomb was not enough, the game also offers the toolbox, you can buy with a strong explosive bomb clearance bonus. The game also supports editing mode, you can self-levels, challenge yourself, challenge friends.
