Alan Wake, the 360-exclusive psychological action thriller from Remedy, receives downloadable content entitled The Signal today.

Here's the world from MS:

Now is the time to descend into madness as you explore the dark and twisted world of The Signal, the first Game Add-on for Alan Wake. In this latest chapter to the critically acclaimed psychological action thriller exclusive to Xbox 360, our favourite writer is in greater peril than ever before as the boundaries between reality and nightmare become disturbingly distorted. Threatening to overwhelm Alan’s mind, the nightmarish mysteries feel chillingly familiar. Keep your flashlight nearby as you get ready to follow The Signal.

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As the freakish landscapes and enemies become all-too-real, Alan must find a way to escape in “The Signal,” offering a heart-pounding thrill ride featuring new locations and innovative gameplay.

More info at xbox.com/alanwake.