Square-Enix takes its mobile games very seriously. Proof of this is shown in the upcoming Mobius Final Fantasy update (Android, iOS, and PC). One of the biggest mysteries of Final Fantasy X will be revealed in the mobile game. Nothing less than the story of Tidus between FF X and FF X-2 (which is a prequel, in this case).
And it is not an event to promote the mobile game since the producers of Final Fantasy X and Mobius Final Fantasy are the same, Motomu Toriyama and Yoshinori Kitase. Kitase went so far as to say that he intends to “break the perception that mobile is for casual”.
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