Mystereet: Fukagyaku Sekai no Tantei Shinshi

Yasogami Kaoru is the youngest class A detective in the international crime-solving organization IDLA. After solving a murder case on a cruise ship, Kaoru is contacted by IDLA's director Connor, who tells him that a famous detective named Agyou Sohma has disappeared under mysterious circumstances. As Kaoru begins the investigation, he discovers connections between seemingly unrelated cases that challenge even his abilities.

Mystereet is a Japanese-style adventure game. Basic gameplay follows the traditions of the genre and involve text-heavy, puzzle-less advancement with simple interaction. Stand-out features include detailed examination of objects in point-and-click fashion, as well as collecting special points during the investigation, which may increase the player's detective rank.

The PlayStation 2 version adds voice-overs to the dialogues and removes the erotic scenes of the Windows release.