updates called 'mutations.' Cool, I'm down. Left 4 Dead 2 also has another update called 'The Passing' that will bring back the characters from the first installment of the game. Here's a video I made about it. Or a video I got the embed code for, you decide.
So to recap, a blog that barely anyone reads and has Jack Kerouac as an avatar and mascot just did a post about a zombie video game. Take it sleazy, internet.