This early, authorized freeware remake of the puzzle game from 1987 updates the graphics and sounds while maintaining the original gameplay. Each level is a puzzle room filled with obstacles and viewed from above, where the objective is to use a series of mirrors to guide a laser beam towards a receiver device and complete the stage. The mirrors are stationary, but can be rotated to deflect the light to several directions, with some turning automatically all the time. The player must configure the mirrors and carefully avoid the mines and walls that reflect the laser back to itself, causing the emitting device to overload and explode. Bomb detonators have to be activated and destroyed to open a passage to the receiver. Other features change the behavior of the laser: the prism bends the light in random 90º angles; the optical fiber nodes act as a portals, transporting the beam to another place of the board; logical doors have internal mirrors that absorb or deflect the laser when hit at the correct orientation.