Final Fantasy XI Mobile Reboot Officially Canceled - GameSpot

Nexon and Square Enix have canceled development on the mobile-focused Final Fantasy XI Reboot, which was originally scheduled for a 2016 release date.
Final Fantasy XI is an online RPG that manages to break the mold, if just barely--but, actually, that's no mean feat.

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Final Fantasy XI R Mobile Version Is Canceled - Siliconera

SoThe FF11 mobile game seems to be cancelled. : r/ffxi

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Final Fantasy 11 mobile reboot canceled by Square Enix & Nexon