Warhammer Underworlds: Online is a multiplayer tactical strategy game with turn-based combat and card game elements set in the Warhammer fantasy universe. Trapped in the Mirror City of Shadowspire, two squads fight for survival. Each of them is united by a common goal and has its own fighting style. Play as the valiant Stormcast Eternals, armed with divine weapons, or as the ruthless, bloody warriors of Khorne, tearing apart enemies alongside your trusty Flesh Hound. In the game, you control a squad of fighters using a deck of cards and dice rolls. As you progress, you will visit the gloomy city of Shadesspire, which holds many secrets and treasures.