There are three versions of Nocturne in Japan.
• The original version, which was only released in Japan.
• The second version called Nocturne Maniax, which is the same as the one released in the United States, updated with the optional Labyrinth of Amala dungeon, true demon ending and Dante from the Devil May Cry series.
• The third one, which again was only released in Japan in 2008 called Nocturne Maniax Chronicle Edition. This version removed Dante and replaced him with Raidou Kuzunoha from the Shin Megami Tensei: Devil Summoner series in his place. Raiduo, who is silent speaks through his cat, Gouto.