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>new region is based mostly in england but there are some isles from the rest of the UK that can be explored in post game
>gyms are back, but they will have a different set up, more like the alola trials
>title defense is back, the challengers are previous games characters and the former champion is the hardest challenger
>ultra beasts and previous legendaries are back
>battle cruise (similar to battle maison from ORAS)
>new megas (flygon and dragonite confirmed)
>z crystals can be obtained post league only
>ride pokemon similar to LGPE but limited to regional mons only
>two new rivals, no new types and no new eevolutions
>one legendary is bug/psychic and the other is bug/dark and both have royal forms that change their type and attacks if holding the CROWN or the SCEPTER
>pseudo is a grass dragon with mega