Left 2 Rage

Let me get this straight, I love Left 4 Dead 2. It probably has the most compelling cooperative multiplayer on the market and its gameplay chock-full of tension, panic, and adrenaline keeps me coming back to play.

Most gamers, even if they don't own them, probably have played a campaign or two locally with a friend. While Campaign mode is certainly fun, they're missing out on the entire competitive multiplayer experience, VERSUS.

In Versus, you can be a zombie. Versus is fun. Versus doesn't take 2 hours to complete a map. Versus is completely filled with spineless rage-quitting chumps.