To provide a game machine that uses power of a storage device to achieve stable operation of the game machine and efficiently and surely stores power in the storage device.

The game machine 1 that operates with the power supplied from a power source includes: a storage device 100 which is provided as a power source other than a main power source supplied from the outside, stores power using the main power source, and is used as a sub-power source; and a determining means 290 determining whether a game state is a power storable state in which power can be stored in the storage device. When the determining means determines the power storable state, a part of power supplied from the main power source is distributed and stored in the storage device.