It was to be one last mission. At the behest of the shady antiquarian Randall Tillinghast, who makes them an offer they can’t refuse, the investigators travel to the South Pacific and the vast, alien city of R’lyeh. But the more they explore, the more horrors they discover, and as the sense of dread grows stronger, the investigators – and all of Arkham – are faced with a formidable threat.

The time has come. Cthulhu has awoken, and Arkham will never be the same.

In the Drowned City campaign expansion, one to four investigators explore the mysterious and deadly city of R’lyeh, which rises from the depths of the ocean. As players venture into the tomb-like ruin, they climb the crumbling foundations of the city, scour the ocean floor for alien artefacts, navigate freakish machinery and shifting corridors, and discover an ancient history that drowned with the city itself. Along the way, they experience a unique story that changes depending on the investigator they choose, all culminating in an ultimate battle against Cthulhu himself!

This expansion contains the entire Drowned City campaign. Players only need a copy of Arkham Horror: The Card Game Revised Core Set to immerse themselves in the story.