Shattered Aeons is the sixth and final Mythos Pack in "The Forgotten Age" cycle for Arkham Horror: The Card Game.
In The Forgotten Age, you journeyed to the darkest corners of Central America in search of a lost Aztec city-state. What you found during your expedition may be the greatest scientific discover of the age, but it could also be the Earth's undoing.
Throughout The Forgotten Age cycle, you have tried to set your mistakes to right, chasing answers about the mysterious artifact your uncovered and those who pursue it. Retracing your path south, you have uncovered secrets that threaten your entire understanding of the world, of time, and of humanity's place in the universe. Now, the last and greatest of your questions will be answered in Shattered Aeons. But be wary as mere mortals may not be meant to gain such knowledge and the truths you seek may destroy what little remains of your sanity.
—description from the publisher