The Walking Dead creator, Robert Kirkman has kicked off the "9 days of the Apocalypse" competition in iOS title The Walking Dead: Assault.
Beginning today, Kirkman will set a new daily challenge for players of the mobile game via his Twitter feed @RobertKirkman, every morning at 11am PST.
Winners of each challenge will be awarded prizes that will be kept secret until the challenge is made, but publisher Skybound promises "these will be very special items you will not be able to find anywhere else."
The Walking Dead: Assault released on Nov 30 to decent critical reception.
The game is an isometric action title that follows the story of the Walking Dead comic.