The Walking Dead: Survival Instinct is a first-person shooter based on AMC's television series, which is of course based on The Walking Dead comic series from Robert Kirkman. It's the first new-media extrapolation to be based on something based on The Walking Dead, rather than on the graphic novel itself, which is probably a smart move when a game directly from the comic has already proven extremely successful.
All that said, Survival Instinct integrates AMC's TV show directly, grabbing Norman Reedus, the actor who plays Daryl Dixon, to voice the main protagonist.
"Norman is super-cool, generous, and a real joy to work with," writes Terminal Reality Creative Director Drew Haworth. "And man, does that guy deliver! He gets the scene, the line, and what you're going for instantly and then doubles down on it, effortlessly 'Darylizing' lines for maximum punch. He's the kind of actor that really makes writers look good."
From our own experience with the TV show, we have to agree with that last statement. No one on The Walking Dead nails "looking dramatically at another cast member, in silence, for five whole minutes" quite like Reedus.