The basic format of Pokémon games was clearly established with the original Red and Blue versions: catch ‘em all, beat all the Gym Leaders, beat the Elite Four, become a Pokémon Master. Simple and straightforward. Of course, “simple and straightforward” doesn’t create the most profitable IP on the face of the planet, and that is why Pokémon games have iterated, innovated, and just otherwise thrown massive curveballs over the decades.
from GameVerse