The WonderSwan release of Final Fantasy is a remake of the original game, using higher quality MIDI, cleaner 32-bit graphics and featuring new scenes that further expand the details of the story.
The WonderSwan Color version of Final Fantasy II included completely redone graphics in the manner of the 16-bit generation Final Fantasy games and includes larger character sprites, remixed music by Tsuyoshi Sekito, and full graphical backgrounds in battle mode. It is from this base that the international version of Final Fantasy II began to take shape.