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Nitroplus (Nitro+) is a Japanese game company specializing in Eroge Visual Novels. Its works are almost invariably dark-themed, with an abundance of Eldritch Abominations, horror, rape, gore and violence.

They first came to general attention with the release of Phantom of Inferno in 2000, which also was main writer Gen Urobuchi's first released work with the company. Since then it has become well recognized in visual novel circles, such as the releases of Saya no Uta in 2003 and Chaos;Head in 2006, along with Key Visual Arts, Type Moon and 07th Expansion.

Gen Urobuchi is one of the most prolific people in the company, as shown in the original light novel for Fate/Zero and their widely famous Puella Magi Madoka Magica, Nitroplus' second original anime.

Releases of Nitro+ (in chronological order):

  • Phantom of Inferno (2000)
  • Vampirdzhija Vjedogonia (2001)
  • Kikokugai: The Cyber Slayer (2002)
  • Hello, World (2002)
  • Deus Machina Demonbane (2003)
  • Saya no Uta (2003) - one of Gen's most famous - or infamous - works
  • Angelos Armas (2005)
  • Jingai Makyou (2005)
  • Hanachirasu (2005)
  • Sabat Nabe (2005)
  • Dra+Koi (2006)
  • Gekkou No Carnevale (2007)
  • Zoku Satsuriku no Django (2007) - also known as Tre Donne Crudeli
  • Nitro+ Royale - a fighting game
  • Chaos;Head (2008) - in collaboration with 5pb
  • Sumaga (2008)
  • Full Metal Daemon Muramasa (2009)
  • Steins;Gate (2009) - spiritual successor of Chaos;Head
  • Axanael (2010)
  • Robotics;Notes (2012) - spiritual successor to Steins;Gate (these three are now called "Science Adventures")

Nitroplus also has a branch focused on producing Boys Love Visual Novels: Nitro+ CHIRAL. Its works are listed below:

In addition, people from the company have worked on, or are credited in, other works:

  1. Exiled From Paradise