The Walking Dead: Episode 4 - Around Every Corner is now available for download on PC and Xbox 360.
It was released yesterday in the US via PSN.
Written by Gary Whitta, episode four continues the story of Lee Everett and the group of survivors as they arrive in Savannah, Georgia.
Stalked by an "unseen human threat and with the constant menace of the undead," Lee struggles to manage the paranoid group while protecting 8-year old Clementine.
Episode three of The Walking Dead will be available for iOS devices later this month with episodes four and five - the season finale - arriving later in the year.
The full series is scheduled to launch this year as a retail product in North America for Xbox 360 , PlayStation 3 and PC.
Each episode is available for $4.99 or as a $19.99 season pass on PlayStation Network; for 400 Microsoft Points per episode on Xbox Live Marketplace, and as a $24.99 five-episode season pass for PC and Mac from the Telltale Online Store, Steam, and other digital outlets.
The Walking Dead is also available for iOS devices via the App Store as Walking Dead: The Game, for $4.99. Episodes 2-5 can be bought as in-app purchases for $4.99 each or as a multi-pack bundle for $14.99.