Elden Ring Tarnished Edition is the Nintendo Switch 2 version that includes the base game, the Shadow of the Erdtree expansion, and the new Tarnished Pack content. On PlayStation, Xbox, and PC, players who already own Elden Ring can purchase the Tarnished Pack separately.
The Tarnished Pack adds Heavy Knight and Idus Knight as new starting classes, four armor sets, and three Torrent appearance options. It is additional game content rather than a separate game mode.