GAME PROGRAM AND GAME SYSTEM

摘要

PROBLEM TO BE SOLVED: To enhance game property in a timing game.SOLUTION: A game program allows a computer of a game device to perform: an output control step in which a reference index is displayed in a predetermined location on a screen, a surrounding object which surrounds the reference index is displayed, and the surrounding object is shrunk toward the reference index; a receiving step in which input from a user is received; and a determination step in which success/failure is determined on the basis of the timing in which the input is received and the timing in which the surrounding object shrinking toward the reference index arrives at the reference index.