
However, Sony and Nintendo came to a disagreement over the rights of the new CD system and Nintendo scrapped the project. When Nintendo was collaborating with Sony to build the CD peripheral for the system, Square was contracted to build a game to show off the new possibilities of the CD format and Ishii was allowed to make Secret of Mana. With the advent of the Super Nintendo Entertainment System, Ishii developed ways to utilize the new Mode 7 effect the system offered which can be found in many of Square's games from this era, such as rendering flight. Titled Seiken Densetsu: Final Fantasy Gaiden, the game became the first entry in the Mana franchise. Unable to get the idea green-lit for the next numbered Final Fantasy, he was instead allowed to make a gaiden title for the Game Boy in the early 1990s. With Final Fantasy finished, Ishii came up with the concept for a seamless world system for combat and exploration that would become the hallmark of the Mana franchise. He was also a prominent contributor in other early Final Fantasy titles as well as the early SaGa games.


Ishii began his career working for Square on the original Final Fantasy in 1987.
