Moon Whistle

While unique in appearances, its gameplay is a customary one for a role-playing game; buying items in shops, equipping gadgets, random encounters, boss battles, leveling up, explorations, communicating with townspeople, and so forth. Its battle system is the default one of RPG Tsukūru 95 so that battles are operated in a front-view, turn-based fashion that resembles to that of SNES Dragon Quest games.

Set in Motomachi Town (もとまちタウン), a fictional 1980s Japanese suburb, the story begins on Zenon's first school day following spring vacation. After school, he goes to a hill in the town together with Narumi looking for X-Ranger, a superhero in a children's TV show, who allegedly appears in Motomachi Town for some reason. After meeting a man in X-Ranger's costume, Zenon and Narumi fight a bad monster in the hill in hope of helping him. Thanks to this, Zenon becomes popular enough with school-age children to be invited to their "secret base" to join them.

Later Zenon and the gang happen to visit X-Ranger's hideout, and touch the panel of a giant machine sitting in there without his consent. Then they find themselves in a strange town, where they save Zeta (ツェータ) from Hart (ハルト), a spoiled mean child, and are befriended with him. Once prohibited to use the machine by X-Ranger, later they are allowed to go between two cities. A cat-like creature, Max (マックス), is also acquainted with them.