Writer Douglas Clegg and artist Glenn Chadbourne managed to combine zombies and Christmas with their morbidly endearing picture book The Saddest Little Zombie. Now you can play a video game version of the book. It's a simple "spot the difference" game, but the "point and click" interface is quite intuitive and the illustrations delightfully detailed. Who doesn't want a little mistletoe and intestines for the holiday? Ho, ho, ho! The horror. The horror.