It was bad enough when Valve enabled pre-loading of the Left 4 Dead 2 demo, forcing potential zombicidal maniacs to stare at the game they have and yet don't for an entire madness-inspiring weekend. Now, the developer has begun allowing pre-loading of the full version of Left 4 Dead 2 through Steam. If you've pre-purchased the game through Valve's digital distribution platform (which still nets you a 10 percent discount off the price of the title), you can now put it on your computer, and just ... let it sit there until it finally unlocks on November 17.

In the immortal words of Tom Petty, the waiting truly is the hardest part. Except for the zombie apocalypse. We suppose that part is pretty difficult as well.

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