Dragon Knight 4 (ドラゴンナイト４) is a continuation of the Dragon Knight series, and a sequel to Knights of Xentar. It features Kakeru, the son of the protagonist of the last game, Yamato Takeru, and his wife Luna the sorceress. He sets out to defeat the evil wizard Lushifon, who is plotting to destroy the world.
Like its predecessor, it is predominantly known for its eroge (erotic) content. However, there are three versions of the game: the original for Japanese home computers (PC98, FM Towns and Sharp X68000), the console ports handled by Banpresto (SNES, Saturn, PS1 and PC-FX) and the 3D remake for PC. The console versions were "sanitized" of their adult content by publisher Banpresto.