The product is an expansion for Arkham Horror: The Card Game. There is no option to play separately with only the add-on, the main game is required.
Shattered Aeons is the sixth and final expansion in The Forgotten Age cycle for Arkham Horror: The Card Game.
In The Forgotten Age cycle, you have just traveled through Central America in search of the lost Aztec city-state. What you have discovered may be the greatest discovery of this age, or the basis of the downfall of the world.
Now, all your questions will be answered at the end of the story – Shattered Aeons . But beware, for mortals have never understood these mysteries, and perhaps never should have.