Hungering Abyss is intended as an introduction to Arkham Horror: The Roleplaying Game. As a module, its goal is to teach both players and GM the game and to have a fun experience while learning. It comes packed with monsters, allies, characters, and maps. Importantly for the Arkham Horror seal
Forged in the nightmare empire’s necrofactoriums, the Hellraker is a warjack unlike any other. A titanic worm wrought from iron, bone, and necrotite, it tunnels unseen before erupting onto the battlefield in storms of ruin.