The original plan for the game was a PvP, online MMO game known as Fate/Apocrypha. However, these plans were cancelled early in development. The project was later revived as "Fate Online Project Reboot" on the behest of publisher Aniplex wanting to make a mobile game to promote the Fate IP. According to head writer Kinoko Nasu, he never owned a smartphone prior to the development of Fate/Grand Order, but got one and played various free-to-play mobile games for reference. Fate/Apocrypha itself would later be revived as a Light Novel series.