I'm not sure about you guys, but I never really thought The Walking Dead was a CGI heavy show. Sure, I've often assumed that the odd city backdrop is added in during post (such as the scene earlier this season which saw fires raging in Atlanta as the armed forces attempted to stem the zombie infection) but I never quite realised just how much the series relies on its visual effects team. The following featurette offers up a look at what exactly is added in without us ever even realising. I for one assumed that all those "Walkers" were extras and didn't think for a second they were CGI additions. If nothing else, the footage is a real credit to those working on The Walking Dead - it's not often you find a TV show with truly convincing effects. Check it out below and sound off with your thoughts in the usual place.