Final Fantasy Adventure

Final Fantasy Adventure, titled Mystic Quest in Europe, is an action role-playing game for the Game Boy that was both developed and published by Square in 1991. The game was re-released in North America by Sunsoft in 1998. Final Fantasy Adventure is the first title of the Mana series, and it is a spinoff of the main Final Fantasy series. In 1993, the game received a sequel titled Secret of Mana, which was released for the Super Nintendo Entertainment System. Since its release, the Mana series has disconnected from the Final Fantasy franchise to become its own identity.

The North American box art and logo of Final Fantasy Adventure mimics that of Final Fantasy Legend II and Final Fantasy Legend III, but has a dark green background.

Final Fantasy Adventure has received three remakes. The first one was Sword of Mana, which released for the Game Boy Advance in 2003, and is the only one to have been released on a Nintendo console. The game is a retelling of Final Fantasy Adventure, and is a departure from the original, especially by adding elements from the Mana series and removing those pertaining to the Final Fantasy franchise. In 2006, a second remake was released for certain Japanese mobile phones, and it has graphics that are on par with Sword of Mana's but was made more faithful to Final Fantasy Adventure. In 2016, a third remake titled  was released on iOS and Android devices as well as the. Like the mobile phone remake, Adventures of Mana is more faithful to the original Final Fantasy Adventure but uses 3D graphics.

Gameplay
Final Fantasy Adventure does away with the turn-based RPG gameplay in the main Final Fantasy series in favor of gameplay similar to the first The Legend of Zelda. The world map and the dungeons are divided into many squares to fit on the Game Boy's screen, and the game is shown from a top-down perspective. The game has two save files.

Development
In 1987, Square trademarked Seiken Densetsu for an ambitious RPG that they were making for the Famicom Disk System, titled The Emergence of Excalibur. The game would have consisted of five Famicom Disk System floppies, which would have made it one of largest games developed for the Famicom at the time. The same year, Square even made advertisements for customers to pre-order The Emergence of Excalibur even though, according to, the game never made it past the early planning stages. In October 1987, Square sent a letter to people who pre-ordered The Emergence of Excalibur and told them that the game was canceled, but as a consolation, they allowed them to pre-order the first Final Fantasy game for 5,900 yen.

In 1990, after the release of Final Fantasy III, Koichi Ishii accepted Square's offer to direct a spinoff of the Final Fantasy franchise. The game started development as Gemma Knights, but Square decided to revive the Seiken Densetsu trademark, titling the game Seiken Densetsu: Final Fantasy Gaiden in Japan.