Demonbane (デモンベイン, Demonbein) is a visual novel series by Nitroplus with mecha and Cthulhu mythos elements. Beginning as an eroge visual novel for the PC, it was ported into a PlayStation 2 non-eroge remake, and spawned a sequel visual novel, a prequel novel, an anime television adaptation and a conversion to manga. An English version of the original Demonbane PC game was released by JAST USA. The anime is currently streamed with English subtitles by Crunchyroll.