Hearthstone Adventures

The first major roadblock players might encounter in Hearthstone's newly-released adventure, Trial by Felfire, is the Felstorm Run encounter.

While Hearthstone is primarily a multiplayer game, it also offers a single-player mode called Adventures.

As Blizzard has rotated cards out of Hearthstone's Standard gameplay mode, those cards have disappeared from the game's store, too — which can make it tough for anyone wanting to experience the Adventures or build their collection of Wild cards.