Final Fantasy II
He went on to program "Final Fantasy II", released in 1988, introducing an "emotional storyline, morally ambiguous characters, tragic events". He also made the story "emotionally experienced rather than concluded from gameplay and conversations". The game replaced traditional levels and experience points with a new activity-based progression system that required "gradual development of individual statistics through continuous actions of the same kind". "Final Fantasy II" also featured open-ended exploration and an innovative dialogue system where players use keywords or phrases during conversations with non-player characters.