The gameplay trailer for The Walking Dead: Survival Instincts published yesterday was in fact made by a fan and is not a genuine asset from Activision or developer Terminal Reality, though it does use actual in-game footage.
Activision community manager Dan Amrich explained on his blog that the video was created by a fan using footage from an IGN video preview of the game.
Amrich apologized for posting the video in the first place and for "being part of the misinformation and the constant problem of unreliable information found on the Internet."
The video, originally posted to a YouTube account that has since been deleted, caused a stir upon its release yesterday, with many gamers bemoaning its quality.
Survival Instincts was announced in July 2012 and is based on AMC's The Walking Dead TV series. It will be set in rural Georgia and focus on brothers Daryl and Merle Dixon. Players will be able to choose whether to confront the undead head-on or attempt to avoid detection.
Survival Instincts is currently in development at Terminal Reality. That studio's previous credits include Atari's Ghostbusters: The Video Game, as well as Majesco's BloodRayne and BloodRayne 2. The company's most recent release was Kinect Star Wars.
Survival Instincts is scheduled to arrive sometime in 2013 for Xbox 360, PlayStation 3, and PC.