The first two installments were released in Japan on the Famicom and ported that same year to the MSX all four games have been remade for newer systems. The first four Dragon Quest installments were released for the Famicom and Nintendo Entertainment System in Japan and North America, respectively. See also: List of Dragon Quest media Main series Release timeline 1986 The series features a number of religious overtones which were heavily censored in the NES versions outside of Japan.

A core philosophy of the series is to make the gameplay intuitive so that players can easily start playing the games. The original concepts, used since the first game, took elements from the Western role-playing games Wizardry and Ultima. While over the decades many different development companies worked on Dragon Quest, the series has had its creators since its inception, as scenario writer and game designer Yuji Horii, character designer Akira Toriyama, and music composer Koichi Sugiyama have handled their respective roles on most games in the series. Common elements persist throughout the series and its spinoff games: turn-based combat recurring monsters, including the Slime, which became the series' mascot a text-based menu system and random encounters in most of the main series. The basic premise of most Dragon Quest games is to play a hero who is out to save the land from peril at the hands of a powerful evil enemy, with the hero usually accompanied by a group of party members. Square Enix did not register the Dragon Quest trademark for use in the United States until 2002. Early in the series, the Dragon Quest games were released under the title Dragon Warrior in North America to avoid trademark conflict with the unrelated tabletop role-playing game DragonQuest. Installments of the series have appeared on various computers, consoles, handheld devices, and mobile phones. The series has had a significant impact on the development of console role-playing games, and introduced a number of features to the genre.

In addition, there have been numerous manga, anime and novels published under the franchise, with nearly every game in the main series having a related adaptation.

With its first game published in 1986, there are eleven main-series games, along with numerous spin-off games. The games are published by Square Enix (formerly Enix), with localized remakes and ports of later installments for the Nintendo DS, Nintendo 3DS, and Nintendo Switch being published by Nintendo outside of Japan. Dragon Quest, previously published as Dragon Warrior in North America until 2005, is a franchise of Japanese role-playing video games created by Yuji Horii.

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