Nitroplus

Nitroplus Co., Ltd., stylized as nitro+, is a Japanese visual novel computer software company that has developed a number of visual novels, including eroge. They have also have been collaborating with TYPE-MOON (another developer) to create the light novel series, Fate/zero. Their works usually have dark themes such as reanimation of the dead and murder. They also have a branch of the company called Nitro+Chiral, which focuses on Boys' Love visual novels.

List of works

 * Phantom of Inferno (February 25, 2000)
 * Kyuuketsu Senki Vjedogonia (January 26, 2001)
 * Kikokugai: The Cyber Slayer (March 29, 2002)
 * "Hello, world." (September 27, 2002)
 * Zanma Taisei Demonbane (April 25, 2003)
 * Saya no Uta (December 26, 2003)
 * Phantom INTEGRATION (September 17, 2004)
 * Angelos Armas -Tenshi no Nichou Kenju- (January 28, 2005)
 * Jingai Makyō (June 24, 2005)
 * Hanachirasu (September 30, 2005)
 * Sabbat Nabe (December, 2005)
 * Kishin Hishou Demonbane (May 26, 2006)
 * Gekkō no Carnevale (January 26, 2007)
 * Zoku Satsuriku no Django -Jigoku no Shoukinkubi- (July 27, 2007)
 * Sumaga (September 26, 2008)
 * Sumaga Special (June 26, 2009)
 * Full Metal Daemon: Muramasa (October 30, 2009)

They also released a fighting game Nitro+ Royale -Heroines Duel- (ニトロ+ロワイヤル -ヒロインズデュエル-) at the 2007 Comiket.

5pb. x Nitro+

 * Chaos;Head (April 25, 2008)
 * Chaos;Head Noah (February 26, 2009)
 * Steins;Gate (October 15, 2009)

Nitro+Chiral branch works

 * Togainu no Chi (February 25, 2005/May 29, 2008)
 * Lamento -Beyond the Void- (November 10, 2006)
 * sweet pool (December 19, 2008)

On January 25, 2008, they released a minigame disk titled "CHiRALmori" under this branch of which uses chibi versions of the characters from Togainu no Chi and Lamento.