Time-series records of locations of a player character from the start of a game are stored into a storage medium. One of a plurality of layers corresponding to heights in a virtual space in a map image having the plurality of layers is displayed according to a user's first command. Track display is performed according to the user's second command when the map image is being displayed, wherein the player character's tracks based on the records are displayed, overlaying the map image of the layer being displayed, and a portion of the tracks based on the records at the height corresponding to the layer being displayed are displayed in a display form different from that of portions of the tracks based on the records at the heights corresponding to the layers other than the layer being displayed.