If you've pre-ordered Left 4 Dead on Valve's Steam content distribution platform, good news: you should now have early access to the demo. As Shacknews reports, the demo should also be available for Xbox 360 owners who pre-ordered the zombie shooter at GameStop or EB Games.
The Left 4 Dead demo includes two levels from the "No Mercy" campaign playable both online and in single-player mode. One level takes place in and around an apartment building, while the other has the player and his teammates exploring a subway. Shacknews says the demo will only become available to mere mortals on November 11, so that gives folks who pre-ordered about five days to gloat.
The full game is still scheduled to come out on November 18 for the PC and Xbox 360.