Which game engine is credited for Pokémon Pokopia?

Pokémon Pokopia is credited as using the Katana Engine.

The Katana Engine appears in the game’s technical credits and is one of the title’s distinguishing development details. Pokopia uses it to support a social-simulation and sandbox experience built around a changeable environment rather than a linear route-based adventure.

Players gather materials, craft objects, construct buildings, shape habitats, and attract Pokémon. The game also includes different biomes, real-time weather changes, and a day-and-night cycle synchronized with real-world time. Those systems require the world to respond continually to player actions and time-based conditions.

The engine credit is separate from the game’s developers. Game Freak and Omega Force co-developed Pokopia, while Nintendo and The Pokémon Company published it. Keeping those roles distinct helps avoid a common mix-up: Katana Engine is the technology listed for the game, not the name of a studio or publisher.