Stygian: Reign of the Old Ones

"Your former life was in bliss of ignorance until you've awakened to the darkness waiting to devour our very existence on the doorstep of our fragile dimension. Something terrible left its eons old slumber and the reality as we know it, collapsed. The town of Arkham was pulled to somewhere not from this world and its residents are in the shadow of absolute terror. As a survivor of the catastrophe you should investigate the strange occurrences in the city and survive the rising darkness physically and mentally, if possible..."