For some unknown reason, humanity no longer exists. Only lingering shadows and crumbling remnants of a once great civilization cling desperately to an uncaring world.

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In spite of this enduring void shrouded in mystery, life continues in Those They Left Behind. Creatures, vestiges of ancient human technology, strange and exciting, dangerous and cunning, roam haplessly striving for a way of life. They continuously search for purpose among ghostly ruins of once were and will never be again.