In a standard run, you know exactly what types to bring to Winona’s gym. In a Randomizer, her "Flying-type" gym could consist of a Primal Groudon and a Chansey. You can’t rely on memory anymore; you have to build a diverse, adaptable team that can handle literally anything. 3. Mega Evolution Mayhem

Finding a Potion might net you a Master Ball instead.

: An alternative specialized tool for 3DS titles often used by advanced modders to edit specific game data like gift Pokémon or static encounters. Citra Emulator

A randomizer is a tool or a pre-modified ROM that shuffles the internal data of the game. Instead of finding a Poochyena on Route 101, you might encounter a . Instead of your starter being Torchic, you might have to choose between Mewtwo, Garchomp, and Magikarp .