Don't let the above picture fool you. Left 4 Dead 2 isn't a violent revenge policy on Australian cricket, courtesy of disgruntled England fans. It's actually a fantastic zombie survival romp, which you can now pick up for a mere £12.95 at Zavvi!
While it doesn't build on the formula the original concocted with as much effort and flair as you'd expect from a sequel, Left 4 Dead 2 does add plenty of new features and toys to muck around with, and a fair few new foes to scamper away from. For twelve quid, it's a pretty good deal, and if you have a few friends willing to partner up, either off or online, it's a blast.
Left 4 Dead 2 ditches the urban sprawl of the original for something a little more... rustic. Set in the deep South, a new band of survivors must traverse a deadly gauntlet of swamps, circus fairs and farmland, all crawling with zombies, to reach safe-houses and, eventually, rescue. It's standard Left 4 Dead fare, as you scatter around, looking for more weapons and ammo, keeping the hoard at bay and avoiding any mistakes that might attract more of the undead to your imminent surroundings.
What sets Left 4 Dead apart from most shooters is what Valve dubs the 'AI Director'. Instead of a pre-determined series of events, the AI Director monitors your progress on every playthrough, and determines what obstacles you must overcome. It's entirely procedural, meaning you won't see the same set-piece twice. Also new for the sequel is the inclusion of melee weapons, from clubs and baseball bats, all the way to katanas, which you can use to slice your foes up, severing arms from torsos, heads from necks.