In Pokémon Let’s Go Pikachu and Let’s Go Eevee, the Support Play option allows two players to explore the world together. You can boost your chances of catching a wild Pokémon by throwing Poké Balls at the same time as your Support Trainer during Support Play. You can join in as a Support Trainer by waving the second controller, even after a wild Pokémon has already been encountered. Throwing the Poké Ball at the right time makes it more likely you’ll catch the Pokémon, and it will earn your party more Exp. Points, too.
Support Play can even give you an advantage in Pokémon battles against other Trainers. Team up with a friend, and you’ll both be able to control a Pokémon and issue it commands during the match. You’ll also be able to connect with other players and battle them, too. There are two communication features to use for battles: local communication, which connects two nearby Nintendo Switch consoles, and Internet communication, which lets you connect to players who may be far away.
And battling isn’t the only way to play with your friends. You can also trade Pokémon using these communication features to gather Pokémon you’ve never seen before and complete your Pokédex. Please note that in order to use the internet-based communication features for battling and trading, you will need to enroll in the Nintendo Switch Online service that officially starts in September.