Question: can you use pokeball plus with other games?
Answer: The Poké Ball Plus only works with its compatible games, not with any real-life Pokémon you may run into. (Which, like, let us know if you do.) ... Another bonus is that you can use the Poké Ball to transfer Pokémon between Let's Go! and Pokémon Go, so you could theoretically start off Let's Go! with a very full Pokédex.