Moonstone

Company type	Joint stock company
Industry	Computer games
Founded	2003
Headquarters	Japan
Products	Visual novels
Website	moon-stone.jp

Moonstone is a Japanese visual novel studio known for creating adult-oriented bishōjo games. The founding members of Moonstone had once been members of Circus, a similar visual novel studio. After the establishment of Moonstone, a collaboration project between Moonstone and Circus was set up for Circus' game Suika AS+, and then another collaboration project between the two companies was set up for Moonstone's game Gift. On 2009 Moonstone established the sub-brand Moonstone Cherry, which focuses on nukige titles.

• Ashita Deatta Shōjo (May 30, 2003)
• Imōto Watashi, Donna Koto Datte... (November 28, 2003)
• Doko e Iku no, Ano Hi (June 25, 2004)
• Gift (May 27, 2004)
  • Gift Rainbow-colored Stories (January 27, 2006)
• Clear (August 24, 2007)
  • Clear Crystal Stories (May 3, 2008)
• Maji Suki ~Marginal Skip~ (April 24, 2009)
• Angel Ring (June 25, 2010)
• Princess Evangile (July 28, 2011)
  • Princess Evangile: W Happiness (June 29, 2012)
• Magical Marriage Lunatics!! (September 27, 2013)
• Love Sweets (April 25, 2014)
• Natsu no Iro no Nostalgia (January 30, 2015)

• Icha Pri! ~Ojousama to Icha Love Ecchi na Mainichi~ (December 18, 2009)
• Imouto Paradise! ~Onii-chan to Go nin no Imouto no Ecchi Shimakuri na Mainichi~ (December 28, 2010)
• Houkago☆Eroge Bu! ~Eroge Seisaku no Tame Onnanoko to Ecchi Shimakuri na Mainichi~ (February 25, 2012)
• Imouto Paradise! 2 ~Onii-chan to Go nin no Imouto no Motto! Ecchi Shimakuri na Mainichi~ (April 18, 2013)
• Demon Busters ~Ecchi na Ecchi na Demon Taiji~ (October 31, 2014)
• Imouto Paradise! 3 ~Onii-chan to Go nin no Imouto no Motto! Ecchi Shimakuri na Mainichi~(January 26, 2018)

• Moonstone official website (in Japanese)