Zombie enthusiasts go it alone this week with the latest Left 4 Dead 2 Mutation, "Last Man On Earth." No splitscreen, no Survivor bots, and no Common Infected—it's just you and some Special Infected in single-player mode.
It's not nearly as fun as it sounds. You get caught by a smoker, hunter, or jockey and it's pretty much game over. You don't die immediately, you just get one more chance unless you can reach first aid. Unfortunately, you usually start off with horrible weapons that can't kill infected quickly enough without multiple players shooting. And since you're usually facing more than one at once, it only exacerbates the problem.