A mega-dungeon that supports a full-year campaign. A legendary adventure considered by many to be one of the greatest of all time! Explore a thousand-year-old dungeon mystery waiting to be solved...

In this D&D 5e adventure, the Clockwork Tower, an enigma of whirling gears and steam, materializes in Esherton. This is the once-lost workshop of Constantine Chronosmith, who disappeared a century ago amidst time-altering experiments.