Not only has the A.I. Director set a new watermark for video games, you can play as the Zombies too!
All of this is great, of course - the anticipated support, great A.I., fun (albeit few) levels - but what really has me laughing like a silly little girl is the Versus mode. Being able to play as the "bad guys" taps into my inner devil and reveling in the fact that I'm purposefully ruining someone else's day brings me great, twisted satisfaction. As my friend phrased it during one of our rounds as the Zombies, "it's like were making a good Zombie movie because, this time, the bad guys actually win [overbearing laughter]." That was right after my Smoker snared a helpless human character who had been covered in my friend's Boomer vomit, attracting a Zombie horde as I strangled him against a barbed-wire fence.