GAME MACHINE

PROBLEM TO BE SOLVED: To enhance amusement by providing a light beam outputting part and an irradiating direction changing means in a game machine utilizing light beams, controlling irradiating direction changing operation according to the quantity of a detected function light beam and detecting reflected reflecting function light beams to develop a game and to lead various operations. SOLUTION: Two stands of bridge pier shape 2 and 2' and a main body 3 connecting the upper ends of them are provided to constitute a projector 1 and a projecting unit is arranged in a circular expanding part 4 formed in a center of the main body 3. This projecting unit is provided to able to change its projecting direction by a driving unit provided inside a position closer to the stand 2. In addition, before/after forming a game court, a longitudinally long rectangular sheet 11 is provided and when a player brings the reflecting surface 10 of a racket 7 to the projecting position of visible light on this sheet 11, a reflecting function light beam is generated to play a game by changing the projecting direction of the projecting unit 13 according to the quantity of function light beams detected by a function light beam sensor.