Dragon Warrior II, known as Dragon Quest II: Akuryou no Kamigami (ドラゴンクエストII 悪霊の神々?, lit. "Dragon Quest II: Gods of the Evil Spirits") in Japan, is a role-playing video game (RPG) developed by Chunsoft and published by Enix (now known as Square Enix) in 1987 for the Nintendo Entertainment System as a part of the Dragon Quest series. Enix themselves created the American version of Dragon Quest II, publishing the game there in 1990.[3] Dragon Quest II is set 100 years after the events of the first game. The game's story centers on the prince of Midenhall, who is ordered to stop an evil wizard named Hargon after Hargon destroys Moonbrooke Castle. On his adventure, he is accompanied by his two cousins; the prince of Cannock and the princess of Moonbrooke. Dragon Quest II greatly expands on the series formula from the first game by having a larger party, more areas to explore, multiple heroes and enemies in a battle, and a sailing ship. Dragon Warrior II was successful in Japan; the original Famicom version shipped 2.4 million copies. Later, the game was remade for the Super Famicom and the Game Boy Color with Dragon Warrior as Dragon Quest I & II. A version of the game for Android and iOS has been announced for release in Japan in Winter 2014.[2] The third title in the series, Dragon Quest III: And Into the Legend..., was released in 1988 in Japan.[4] Dragon Warrior III is the prequel of the first two games; it follows the ancestor of the main characters, the legendary hero Erdrick;[5] the three games are collectively called "Erdrick's Legend Trilogy".

Dragon Quest IV: Chapters of the Chosen (ドラゴンクエストIV 導かれし者たち Doragon Kuesuto Fō Michibikareshi Monotachi?, lit. "Dragon Quest IV: The Guided Ones"), known in English speaking parts of Europe and in Australia as Dragon Quest: The Chapters of the Chosen (Nintendo DS) and originally published as Dragon Warrior IV for the NES version in North America, is a role-playing video game and the fourth installment of the Dragon Quest video game series developed by Chunsoftand published by Enix (now Square Enix). It was originally released for the Famicom on 11 February 1990 in Japan. A North American version followed in October 1992, and would be the last Dragon Quest game localized and published by Enix's Enix America Corporation subsidiary prior to its closure in November 1995, as well as the last Dragon Quest game to be localized into English prior to the localization of Dragon Warrior Monsters in December 1999. The game was remade by Heartbeat for thePlayStation, which eventually was available as an Ultimate Hits title. This was followed with a second remake developed by ArtePiazza for the Nintendo DS, released in Japan on 22 November 2007. This remake was released in Australia on 11 September 2008, in Europe on 12 September 2008 and in North America on September 16, 2008. A version based on the Nintendo DS remake for Android and iOS was released in 2014.Dragon Quest IV differs from the rest of the series by breaking up the game into five distinct chapters, each of which focuses on a different protagonist or protagonists. The first four are told from the perspective of the Hero's future companions and the fifth one, from the hero's perspective, brings all the characters together as they start their journey to save the world. The PlayStation remake adds a sixth chapter, which is retained in the DS remake.

Flying Dragon, known in Japan as Hiryū no Ken Twin (飛龍の拳ツイン, Hiryū no Ken Tsuin?, "Twin Fists of the Flying Dragon"), is a fighting game with role-playing video game elements that was developed by Culture Brain and released for the Nintendo 64 in 1998. It was published in Japan by Culture Brain, and by Natsume in North America and Europe. Its most notable feature was the game's SD mode that featured a character progression system, in which characters advance in levels as they become more experienced, and in which it is possible to collect credits and treasure items to equip characters with. The game received relatively low scores on specialized reviews at the time of its release. It had a sequel a year later, titled S.D. Hiryu no Ken Densetsu. Flying Dragon was also an NES game released by Culture Brain in 1989, where the player controlled a martial artist trying to recover magical scrolls stolen by the evil Tusk Soldiers. It was afforded a nominal sequel with Flying Warriors.