Titles with this specific RJ-numbering are often reviewed on enthusiast forums and sites like , where users rate them based on: : How well the "secret" atmosphere is maintained. Art Quality : The consistency of the character designs.

In Kouen no Himitsu no Game Asobi, players take on the role of a protagonist who finds themselves in a mysterious park where they must navigate through a series of challenges and games. The game's story is full of twists and turns, keeping players on the edge of their seats as they try to uncover the secrets of the park.