Pictured: sh*t getting real.
Leading up to Halloween, Steam has a number of fitting games on sale, some of which even have new theme-specific add-on content, such as Rock of Ages.
Of course, the true highlight of the promotion has to be Railworks 3: Train Simulator 2012. I've always tried to avoid publicly judging the people who are into the game and its absurd library of paid DLC out of fear that, one day, I might get pulled in. Enter Trains vs Zombies -- you'd be stupid not to.