Zombie Apocalypse 2.0
L4D2 does a great job of building off of the first game. Now that the core mechanics are in place adding additional tweaks makes all the difference. The A.I. Director is improved and while the levels look great, I would have enjoyed at least one campaign that was less linear. The new modes are sharp and really do provide some different play styles and time sinks. Overall just another quality game by Valve.