Over the next few years, Enix published several video games for various Japanese home computer systems. Rather than developing games within its own company, Enix would continue to outsource the production of its games to other developers through the use of royalties. Enix is perhaps most famous for publishing the "Dragon Quest" series of console games (released as "Dragon Warrior" in North America until 2005) developed by Chunsoft. Key members of the developer's staff consisted of director Koichi Nakamura, writer Yuuji Horii, artist Akira Toriyama, and composer Koichi Sugiyama, among others. The first game in the Famicom-based RPG series was released in 1986, and would eventually sell 1.5 million copies in Japan, establishing "Dragon Quest" as the company's most profitable franchise.