Such bowling game systems are configured with: an approach where players carry out a bowling action; a lane extending from the approach and on which the ball bowled by the player rolls; a plurality of pins placed on an end of the lane opposite a side of the approach; and trough-like gutters provided paralleling both sides of the lane to receive the ball slipping off the lane. Players enjoy the game by competing with each other for a higher score that depends on the number of pins they knock down (see Patent document 1).
Patent document 1: Japanese Unexamined Patent Application Publication No. 2005-334224