Key is a Japanese visual novel studio which formed on July 21, 1998 as a brand under the publisher Visual Art's and is located in Kita, Osaka, Japan. After many of the core staff previously worked together on the games Moon. and ONE ~Kagayaku Kisetsu e~ under the Tactics label, Key released their debut visual novel Kanon in June 1999, which combined an elaborate storyline, an up-to-date anime-style drawing style, and a musical score which helped to set the mood for the game. Key's second game, Air, was released in September 2000 had a similar but more complex storyline than Kanon's and more thorough gameplay. Both Kanon and Air were originally produced as adult games, but all-ages versions were later released without the adult content. Key's third game, Clannad, released in April 2004, was their first all-ages game. Key has worked in the past with Interchannel and Prototype for the consumer port releases of their games. Key collaborated with ASCII Media Works' Dengeki G's Magazine to produce the mixed media project Angel Beats!, which debuted as an anime TV series in 2010. Key's ninth game, Rewrite, was released in June 2011, and a fan disc for the game entitled Rewrite Harvest festa! followed in July 2012. The first volume in the planned six-part Angel Beats! episodic visual novel was released in June 2015.