Abstract: A roulette playing device includes a hitting device for releasing a ball onto a circular runway which comprises a first rotatable roller disposed upstream of an outlet, a second rotatable roller opposed to the first roller and spaced therefrom by a distance smaller than the diameter of the ball, and a driver for rotating the first and the second rollers in opposite direction to each other. Such arrangement makes it easy to spin and release the ball and to control the spin of the ball. A release device for feeding a ball to the hitting device comprises a blower for sending forth air to the outlet through a release passage upstream of the outlet, and a feeder for feeding balls one by one to the release passage. Such arrangement enables the ball released on the circular runway to be accelerated thereon.

Abstract: A roulette playing device includes a hitting device for releasing a ball onto a circular runway which comprises a first rotatable roller disposed upstream of an outlet, a second rotatable roller opposed to the first roller and spaced therefrom by a distance smaller than the diameter of the ball, and a driver for rotating the first and the second rollers in opposite direction to each other. Such arrangement makes it easy to spin and release the ball and to control the spin of the ball. A release device for feeding a ball to the hitting device comprises a blower for sending forth air to the outlet through a release passage upstream of the outlet, and a feeder for feeding balls one by one to the release passage. Such arrangement enables the ball released on the circular runway to be accelerated thereon.

Abstract: A roulette playing device comprises a release opening for releasing a ball. The opening is formed in a circular wall at a position higher than the level where the ball runs on the outermost circumference thereof. The circular wall is preferably tilted from a vertical plane toward a roulette wheel. Such an arrangement prevents the ball from running astray and dropping into the release opening. The roulette playing device further comprises ball sensors for detecting the ball running on the circular runway, an average speed detector for detecting the time the ball takes to run between two of the ball sensors, and a control device for outputting an instruction for prohibiting any more betting when the detected value by the speed detector reaches a preset value. Such an arrangement enables the behavior of the ball to be detected accurately and NO BETTING operation to be timed stably, whereby roulette games are made more amusing.

Abstract: A monitor game machine comprising a cock-pit or driver cabin in which a player is seated, a monitor disposed at the front of said cock-pit, and a steering device operated by the player in response to pictures displayed on the screen of said monitor. The driver seat is inclined backward and forward, and right and left in response to the movement of said steering device.