河津秋敏
is a series of science fantasy open world role-playing video games formerly developed by Square, and is currently owned by Square Enix. The series originated on the Game Boy in 1989 as the creation of Akitoshi Kawazu. It has since continued across multiple platforms, from the Super Nintendo Entertainment System to the PlayStation 2. The series is notable for its emphasis on open world exploration, non-linear branching plots, and occasionally unconventional gameplay. This distinguishes the series from most of Square's other titles.