The first episode of The Walking Dead series, called A New Day, is available for free on Xbox Live Arcade. Telltale has confirmed that the promotion will be available for a limited amount of time, so you better hurry. Most sources state that the first episode of the critically-acclaimed series will remain free at least until the end of 2012.
The rest of the episodes (chapters 2-5) are available for 400 Microsoft Points, but what better way to experience the series that everyone has been talking about for so long than by downloading the first part for free?
Finally, it’s worth mentioning that “A New Day” is also free on iOS.