In The Fall of House Gormangeist, players find themselves amidst the tenebrous events that preamble KeyForge: Grim Reminders (the next major KeyForge set after Winds of Exchange). As they delve into the ancient Gormangeist Mansion, players must not face only a recurring villain, The Grim Reaper, but its heinous master the Amalgamator. To defeat them, players must first investigate the stygian corridors and rooms of the old troubled place, and unlock the secrets within.