They are still locked in their cosmic prisons, but their allies here are working to free them. You and your friends must stop them and protect the world from this immeasurable evil. In Pandemic The Reign of Terror of Cthulhu, you'll be investigators in the fight against the cultists who want to unleash the Great Old Ones on the world. You'll tear through the world of Arkham and Dunwich, collecting clues and fighting evil. But be careful not to fall prey to madness. Pandemic The Reign of Terror of Cthulhu translates the well-known and popular gameplay of Pandemic into the world of Cthulhu and adds completely new elements to it.