1. A mobile communication terminal having wireless communication device for making wireless communications, an image displaying device for displaying an image and sound outputting device for outputting a sound, the mobile communication terminal comprising: execution variable generating unit for generating an execution variable in order to change a progress of game by use of incoming history data indicating a history of incomings which have been performed by said wireless communication device; and game executing unit for executing a game by use of the execution variable generated by the execution variable generating unit.