Arkham Horror The Card Game Into The Maelstrom Mythos Pack - Descend Into The Deep One'S Domain! Cooperative Living Card Game, AThroughout Your Innsmouth Investigations, You Have Ventured Into Tide Hollowed Caves And Dripping Tunnels But These Watery Caverns Are Only The Antechamber Of The Deep Ones Domain. A Hidden City Rests Beneath The Choppy Waves Of The North Atlantic, Slumbering At The Bottom Of The Ocean. If Youre Going To Protect The World From Suffering The Same Fate As Innsmouth, Youll Need To Venture Into The Heart Of The Storm. Fantasy Flight Games Is Proud To