According to a translated interview via Siliconera, Nintendo’s The Legend of Zelda was an inspiration to Final Fantasy XV.
When asked what inspired developers to make the game an open-world title, the following response was given:
“We’ve been inspired by all Western open world-type AAA titles, but the base of the inspiration behind traveling seamlessly in the world comes from The Legend of Zelda: Ocarina of Time. That’s the best one.”
For the complete translated interview, feel free to check it out here.
Final Fantasy XV is scheduled to release on Sept. 30 for PlayStation 4 and Xbox One.