>>14276134It isn't really a pattern thing, it just so happens that on even gen, there're big changes and they focus more on changing the game than adding content.
>Gen 2>fixed glitches, added colors, breeding, tons of mechanics>Gen 4>moved to DS, added tons of content>Gen 6>moved to 3DS>had to create 3D models of the already existing 649 Pokemon>added new type>changed basic mechanics>game produced in relatively small amount of time in comparison to the other gensIt just happens.
