I don't think Nintendo is very involved in the TCG. The Pokémon Company is a separate company, though with 1/3 ownership by Nintendo. Nintendo only really steps

I don't think Nintendo is very involved in the TCG. The Pokémon Company is a separate company, though with 1/3 ownership by Nintendo. Nintendo only really steps in for titles published on Nintendo hardware. The card game and the mobile games are fully under control of The Pokémon Company.