To provide an enclosed ball type game machine for performing a game without anxiety by preventing the number of own balls from being reduced even in a special mode for facilitating entry of a game ball into a start winning hole.

In the enclosed ball type game machine for cyclically using a game ball for performing a game, a game control unit includes a game mode control means of distinctly controlling a first game mode (normal mode) for subtracting the number of own balls used as profit of a player for each launching of the game ball, and a second game mode (special mode) for preventing the number of own balls from being subtracted even in the launching of the game ball.