Square was started in October 1983 by Masafumi Miyamoto as a computer game software division of Den-Yu-Sha, a power line construction company owned by his father. While at the time game development was usually conducted by only one programmer, Miyamoto believed that it would be more efficient to have graphic designers, programmers and professional story writers working together on common projects.
In September 1986, the division was spun off into an independent company led by Miyamoto officially named Square Co., Ltd. After releasing several unsuccessful games for the Famicom, Square relocated to Ueno, Tokyo in 1987 and developed a role-playing video game titled Final Fantasy, which was inspired by Enix's success in the genre with the 1986 Dragon Quest. Final Fantasy was a success with over 400,000 copies sold, and it became Square's main franchise, spawning dozens of games in a series that continues to the present.
Buoyed by the success of their Final Fantasy franchise, Square developed many other widely known games such as Chrono Trigger, Chrono Cross, Secret of Mana, Legend of Mana, Xenogears, Brave Fencer Musashi, Parasite Eve, Saga Frontier, Romancing Saga, Vagrant Story, Kingdom Hearts (done in collaboration with Disney Interactive), and Super Mario RPG (done under the guidance of Shigeru Miyamoto).