An effect application instructing function includes a user setting function for setting up information as to users of an entertainment apparatus to generate a user information table, an event processing function for reading input information from one or more manual controllers and processing data depending on the input information to generate an event processing table, a vibration setting function for extracting only information relative to vibrations from the event processing table and successively registering vibrations types with respect to the user to which vibrations are to be applied in a vibration output table, and a vibration outputting function for generating and outputting vibration indicating data including a vibration type with respect to the user to which vibrations are to be applied, based on the vibration output table and the user information table, and executing a physical effect to be applied to a hypothetical user as a parameter change.