Abstract: An example system includes: a display processing unit performing processing of displaying on a display unit a basic screen containing a selection image and a background image, the selection image being constructed from one or a plurality of images used for receiving selection operation, the background image serving as a background of the selection image; a background setting reception unit receiving setting concerning the background image of the selection image; and a change unit, in accordance with the setting received by the background setting reception unit, changing at least one of a BGM, a sound effect, a design of the one or plurality of images, arrangement of the one or plurality of images, and a design of a user interface image displayed on the basic screen and used for receiving operation.