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>The significant difference with the Wild Area is, if you wander into the wrong part of it, you'll discover that the wild Pokémon can now be drastically overlevelled. It's a series first, and it honestly feels like the bravest thing Game Freak has done for a little while. You could always dip your toe into the odd higher-level route on the other side of a city, say, but never get caught in battle with a level 50, third-stage evolution 'mon with your starter and a level 6 Pidgey.
Holy shit Game Freak did something based