What is Pokémon Pokopia’s named game engine?

Pokémon Pokopia uses the Katana Engine.

The Katana Engine is the engine listed for the game in its published technical details. An engine supplies the underlying technology used to render visuals, manage environments, and support gameplay systems.

Pokopia’s technical foundation supports a world built around environmental interaction. Players place structures, cultivate habitats, explore different biomes, and use Pokémon-taught moves to alter the landscape.

The engine name is easy to confuse with the engines associated with other major games. Katana Engine is not Unreal Engine, Unity, or Capcom’s RE Engine. Those are separate technologies used by different developers and projects.