The story
Kairosoft was founded as a dōjin games developer in 1996, and is currently located in the Nishi-Shinjuku district of Tokyo with only nine employees. They started out developing simulation games for the Windows platform, the first of which was released in 1996 and simulated a used bookstore, and another example was the original Game Dev Story released in 1997, with a sequel released in 2001. In 2001, Kairosoft switched to developing mobile simulation games for the Japanese cell phone market, which was much more developed than America's. The company was incorporated in September 2007, and launched a new website on November 4, 2008.
With the release of Game Dev Story for iOS and Android in 2010, Kairosoft found itself a large hit, which reached the top ten in iPhone app sales in its first week. Kairosoft continued to port over games that it had previously developed for other platforms. Pocket Gamer ranked Kairosoft 30th on its "top 50 developers of 2012" list, calling Kairosoft games a "genre in their own right" but noting that they still were mostly a niche in the market.
From Wikipedia’s article on Kairosoft, shared under CC BY-SA 4.0.3