Azathoth-D: Yōto Saisoku Densetsu

Azathoth-D: Yōto Saisoku Densetsu is a non-canonical spinoff of the Demonbane series in the form of a light-hearted, singleplayer kart racing game featuring the series' heroines.

There are eight playable characters: Al Azif, Ruri Hado, Leica, Elsa, Another Blood, Hazuki, Etheldreda, and Ennea, each with unique statistics. The first four are unlocked by default, but the others can only be unlocked by progressing through the Grand Prix Race. There are 7 main courses with several variations of each for a total of 16 courses overall.

The game contains a tutorial and features two game modes: Grand Prix Race and Time Attack. In Grand Prix Race, the player competes against seven other racers across four courses. Points are awarded according to the order of finish in each course and the winner is the racer with the highest score by the end. In Time Attack, the player is challenged to complete a course of their choosing in the shortest time possible. The game records the player's movements and can project a "ghost" version of the player onto the track so that the player can practice against their former self. In addition, ghosts of other players, including Nitroplus staff members, may be downloaded over the internet to play against.