Omega Force had the sandbox-game experience that helped bring Pokémon Pokopia to life. The Koei Tecmo studio joined Game Freak because Game Freak had less experience in that genre.
The choice was connected especially to Omega Force's work on Dragon Quest Builders 2, a game built around gathering, construction, and reshaping environments. Those skills matched Pokopia's focus on crafting objects, building habitats, and transforming a damaged landscape into a welcoming home for Pokémon.
Game Freak remained essential to the project because of its knowledge of the Pokémon world and characters. The collaboration was therefore not a replacement of one developer by another; it combined Game Freak's franchise expertise with Omega Force's sandbox-development background. Nintendo and The Pokémon Company published the finished game.