Game device, notification method, non-transitory information recording medium and program for informing displacement of game controller mat

Abstract

A process control unit () controls a music reproduction unit () to output a music sound, while controlling a request content creation unit () to present content of a motion requested to the player. At the same time, the process control unit () compares content of the motion acquired from a motion content acquiring unit () with the presented, requested motion (and the timing) to evaluate the stepping motion of the player. Further, during the game, the process control unit () sequentially measures the amount of displacement of the game mat in accordance with the position, etc. of the controller, the position being detected by a controller detection unit (). Then, when the measured amount of displacement exceeds a reference value, an alarm message is synthesized to a game screen and displayed, and the game mat displacement is informed to call attention of the player.