1. A non-transitory computer readable storage medium storing a program for a game device having a timer which maintains real-world time information, the program, when executed by a processor, causes a computer to function as: an event table storage section which stores a plurality of event tables that each include a plurality of first parameters used for an event process and an available period of time of each of the first parameters, where each of the event tables differ in an arrangement of the first parameters with respect to the available period of time, and an event table is selected from the plurality of event tables based on registration information input by a player, such that if the player inputs different registration information, a different event table from the plurality of event tables is selected; an event condition setting section which determines whether or not the player has performed a predetermined operation, detects current period of time based on the timer that corresponds to one of the available periods of time in which the predetermined operation has been determined to have been performed, sets a second parameter used for the event process based on the detected current period of time, and sets an event condition based on the current period of time relating to an action of a player character in a game space based on the second parameter; and an event processing section which calculates the action of the player character in the game space based on an operation input by the player, determines whether or not the action of the player character satisfies the event condition, selects an available first parameter from the first parameters referring to the event table based on the current period of time, when the event condition has been determined to have been satisfied by the action of the player character, and performs calculations which cause the player character to acquire an item determined based on the selected first parameter.