Abstract: A slot machine requiring no game media at all and comprising a game data processing unit which is provided with an input unit for specific data, a storage unit, an arithmetic processing unit, a printer, and a display; and a slot machine body which is provided with a pattern display mechanism, a starting lever, stopping buttons, a win decision unit, and a display for the input data and the results of arithmetic processing. The game data processing unit printer is operative for printing the input data and an incorrect version of the input data on opposing sides of a card and issuing the card to a player for enhanced security. Data that are the same as the specific data input in the data processing unit are input in an input unit for the specific data on the slot machine side so that a game can be started, and the game is allowed to progress or is stopped by operating the specific data input unit on the machine side.

Abstract: A slot machine has a wheel mechanism including a plurality of motors, a plurality of rotary shafts rotated about their respective axes by the driving forces of the motors, and symbol carrying members each having a relatively small radius of gyration and carrying a symbol on its visible surface. The symbol carrying members are spaced apart at equal interals in at least three horizontal rows and at least three vertical columns. Accordingly, the depth of the casing frame of the slot machine can be reduced to a remarkable extent, and a player can immediately identify the winning line visually.