Left 4 Dead 2

Platform: PC (Windows/Mac)
Genre: First-Person Shooter
Developer: Valve Corporation
Publisher: Valve Corporation
Release: 17 November 2009
Rating: Mature
Price: $20

If you ask me, Valve has not made a single bad game. So it follows that Left 4 Dead 2 is good. Actually, it's great. Valve deserves some kind of award for creating two of the best teamwork-based games out there (L4D2 and Team Fortress 2). There's not much to say about Left 4 Dead 2, since it's remarkably simple. Up to four players can play as four "survivors" (with AI controlling those unclaimed) who have to fight their way through a variety of campaigns after the zombie apocalypse. There's a pretty good variety of weapons to choose from, which is the biggest improvement over the first Left 4 Dead, which only had a handful. Only by working together with your allies will you be able to survive the innumerable hordes of zombies that will come after you.
There's also a Versus mode, where some players control the zombies instead, and try to kill off the survivors. There's actually a fun kind of satisfaction in leaping out of nowhere and clawing your hapless victim's face off.
If you like first-person shooters--and Valve's in particular--the download on Steam is priced at $20, so you should really go check it out.
Play, save, and enjoy. See you next week.

--Kotaro