GameXtract writes "One of the hottest demos this weekend has been the Left 4 Dead early access demo which frankly has not been all that early access. Putting that aside, the demo is quite the thriller, and will surely satisfy any zombie killing needs you have. Even though the demo is relatively short, I've probably gone through the two level set more than 10 times across every difficulty. Valve's every experience is different approach is definitely shown within the demo, and its just one of the reasons why you will be playing the levels again, and again. Today we have 56 new screenshots directly from the early access demo which will be officially available to all this Tuesday on steam, and Xbox Live. Catch all the screenshots after the jump!"