Methods and devices are provided for regulating a restriction system. The confocal scanner is provided with a collimator lens for causing beams outgoing from an emission end of an optical fiber for guiding an excited light, with a predetermined spread-angle, to be converted into collimated beams before falling on a microlens disk, wherein a beam spread-angle adjusting means for adjusting the spread-angle is provided between the emission end, and the collimator lens. The gaming system enables the player to play the first type of game.