Pokémon Pokopia’s featured Pokémon come from nine generations, from Generation I through Generation IX.
This range gives the game access to creatures introduced across much of Pokémon history. The roster is curated rather than being a complete collection of every Pokémon species, but it still reaches from the original Kanto-era Pokémon to species from the ninth generation.
The generational span supports Pokopia’s habitat-focused design. Pokémon from different eras can appear together when the player creates the environments they prefer, turning the roster into part of the world-building system rather than simply a battle lineup.
The count is based on the inclusive range I through IX. It is not the same as saying the game contains nine Pokémon or every Pokémon ever released. Generation X is not part of the listed source range for Pokopia’s 300 featured Pokémon.