Preorder Left 4 Dead 2, Get Bill’s Hat In TF2

Valve has revealed an unprecedented crossover between two of the company’s game universes. IS Gordon Freeman tackling the zombie hordes in Left 4 Dead? Not quite. Will Team Fortress 2 player be able to warp those pesky turrets far away with help from the Portal gun? Nope. It’s nothing quite as monumental as those examples, but it is something that could excite haberdashery enthusiasts everywhere.

Players who preorder Left 4 Dead 2 on Steam or at participating retailers will find Bill’s beret the next time they play the PC version of Team Fortress 2. How did it get there? The official Team Fortress blog seems to have thought of everything:

And lest you think this is just some marketing gimmick, here's the intricate back-story justifying it: while conducting a science experiment on parallel dimensions, Bill's hat fell off a table into the Team Fortress universe.

Is Bill's hat the tenth class? All will be revealed in time, but don't hold your breath. Will you get to wear Bill's hat right now, in TF2? Go ahead and hold your breath—now exhale like a champ, because you're a winner and it's happening.

This truly is a combination so amazing that it makes peanut butter and chocolate weep tears of envy.