The Mana series, known in Japan as Seiken Densetsu , is a high fantasy action role-playing game series created by Koichi Ishii, with development formerly from Square, and is currently owned by Square Enix. The series began in 1991 as Final Fantasy Adventure, a Game Boy handheld side story to Square's flagship franchise Final Fantasy. The Final Fantasy elements were subsequently dropped starting with the second installment, Secret of Mana, in order to become its own series. It has grown to include games of various genres within the fictional world of Mana, with recurring stories involving a world tree, its associated holy sword, and the fight against forces that would steal their power. Several character designs, creatures, and musical themes reappear frequently.

Square Co., Ltd. was a Japanese video game development studio and publisher. It was founded in 1986 by Masafumi Miyamoto, who spun off part of his father's electronics company Den-Yu-Sha. Among its early employees were designers Hironobu Sakaguchi, Hiromichi Tanaka, Akitoshi Kawazu and Koichi Ishii, artist Kazuko Shibuya, programmer Nasir Gebelli, and composer Nobuo Uematsu. Initially focusing on action games, the team saw popular success with Final Fantasy in 1987. A role-playing video game, it became the first in a franchise of the same name. Later notable staff included directors Yoshinori Kitase and Takashi Tokita, designer and writer Yasumi Matsuno, artists Tetsuya Nomura and Yusuke Naora, and composers Yoko Shimomura and Masashi Hamauzu.