Every region introduced since X and Y has had some sort of mechanic that makes it unique- Kalos had Mega Evolutions, Alola had Z-Moves, and even Hoenn, a remake, introduced Primal Reversion.
My question is, what mechanics have you designed, and how will they tie into the story for the region they're part of, and will it be introduced in a remake or a new region?
My question is, what mechanics have you designed, and how will they tie into the story for the region they're part of, and will it be introduced in a remake or a new region?