Alan Wake's fiction continues in Alan Wake's American Nightmare, a stand alone fast paced pick up and play experience. After the events of Alan Wake, our eponymous hero finds himself in the middle of a new adventure in Arizona, where his own words again hold the key to defeating his evil twin, the malevolent Mr. Scratch, who spreads darkness where he goes. Now more experienced at dealing with the weird and horrific, Wake is determined turn the tide. With a pulp feel, American Nightmare features wilder new weapons and wilder new enemies.

Source: official Website