Which 2018 Nintendo Switch game is named for Pikachu and makes it the player's partner?

Pokémon: Let's Go, Pikachu! is the 2018 Nintendo Switch game named for Pikachu and featuring it as the player's partner.

The game is paired with Pokémon: Let's Go, Eevee!, and both titles revisit the Kanto region. They are modern reimaginings of Pokémon Yellow, including a prominent partner Pokémon that remains outside its Poké Ball and can interact with the player.

Let's Go, Pikachu! also incorporates catching mechanics inspired by Pokémon Go. Players aim and throw Poké Balls using motion controls or button inputs rather than battling every wild Pokémon in the traditional way. Trainer battles and other role-playing elements remain part of the adventure.

The paired releases were significant because they brought a mainline-style Pokémon adventure to Nintendo Switch. They are not simply ports of Pokémon Yellow: they update the visuals, controls, partner system, and catching mechanics. Pikachu and Eevee versions differ mainly in their featured partner and certain available Pokémon.