Left 4 Dead 2 is out in a few short weeks, but to get everyone suitably excited Valve released a very generously sized demo for PC and Xbox 360 owners. If you haven't had a chance to download and play it yet, don't worry; VideoGamer has put together five extensive HD 720p gameplay clips showing the Xbox 360 version in action, meaning you can feel like you're playing it, even if you're not.
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