Crossplay

Is Hearthstone: Saviors of Uldum crossplay?

Crossplay does not apply to Hearthstone: Saviors of Uldum: it has no online multiplayer.

Saviors of Uldum is Hearthstone's twelfth expansion. Featuring 135 new collectible cards, it was released on August 6, 2019. Following the League of E.V.I.L.'s successful theft of the magical city of Dalaran, the nefarious evil-doers have turned to the land of Uldum, a place of vast deserts and ancient secrets. While the villains' ultimate goals are still a mystery, all is not lost: the brave League of Explorers−Reno Jackson, Elise Starseeker, Brann Bronzebeard, and Sir Finley Mrrgglton−have returned to save the world from Arch-Villain Rafaam and his cohorts.