Game system allowing calibration of timing evaluation of a player operation and storage medium to be used for the same

Abstract

A game system allows timing adjustment for reducing inaccuracy in timing evaluation of an operation performed by a player. The game system includes a storage device for storing reference data defining timing of at least one operation to be performed by a player on an input device associated with an elapsed time from a predetermined position serving as a reference, and an operation instruction device for instructing the player operation timing based on the reference data. An operation detection device detects actual timing of an operation performed on the input device by the player, and an evaluation device evaluates the detected operation by comparing the timing of the operation defined in the reference data and the detected timing. An adjustment value setting device allows the player to correct an evaluation result, and an adjustment execution device changes the operation timing with the predetermined position being used as a reference.