Visual novels

• Phantom of Inferno
  Phantom of Inferno
  Phantom of Inferno is a visual novel game created by Nitroplus, and distributed by Hirameki International . It came out in Japan in 2000, and then was distributed in America as an AnimePlay title in 2003...
  
  Co-writer (2000)
• Kikokugai: The Cyber Slayer
  Kikokugai: The Cyber Slayer
  is a Japanese action and horror visual novel by Nitroplus. It's Nitroplus' third game, and the script is written by Gen Urobuchi. Kikokugai takes place in a dystopian future China.-External links:*...
  
  
• Saya no Uta
  Saya no Uta
  is a visual novel by Nitroplus with horror elements. The original plot is written by Gen Urobuchi.Like Nitroplus' heavily Mythos-inspired Demonbane series, Saya no Uta's plot is somewhat Lovecraftian...
  
  

Anime

• Phantom: Requiem for the Phantom
• Fate/Zero
  Fate/zero
  is a prequel to Type-Moon's visual novel Fate/stay night. It is a light novel by Gen Urobuchi, illustrated by Takashi Takeuchi. The first volume was released on December 29, 2006, and is a collaboration between Type-Moon and fellow developer Nitroplus. The second volume was released on March 31,...
  
  
• Puella Magi Madoka Magica
  Puella Magi Madoka Magica
  is a Japanese anime television series produced by Shaft and Aniplex. The series is directed by Akiyuki Shinbo and written by Gen Urobuchi with original character designs by Ume Aoki, character design adaptation by Takahiro Kishida and music by Yuki Kajiura...