How do you win? As with most of our giveaway contests it's pretty simple:
* To enter, post a comment on this contest page.
* The comment must be left before 11:59 pm Eastern Time on May 12.
* You may enter only once.
* 10 winners will be selected in a random drawing.
* Each winner will be sent a Steam code to download a free copy of Left 4 Dead (valued at $39.99)
* Click Here for complete Official Rules. You must be a resident of the US or Canada (excluding Quebec) who is 18 years or older to enter this contest.
Our huge thanks to Valve for the donation of the prizes. Stay tuned as we have even more giveaway contests planned in the next couple of weeks. Good luck.
Gallery: Left 4 Dead