Final Fantasy 7 Revelation will let you pick Hard Mode from the very start.

In Remake and Rebirth, Hard Mode only unlocked after you beat the game. Naoki Hamaguchi told Hardcore Gamer it has been "reimagined" for Revelation, which also adds an Enemy Strength setting that lets you choose between the returning Dynamic mode and static enemies. "Hard Mode is selectable from the very start of this game," he said.
via Hardcore Gamer


