16 Sep 2011
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Portal 1 For Free Until 9/20/11

As a limited time offer, Valve is offering Portal up for free until the 20th through Steam. Here is the website for the promotion: http://www.learningwithportals.com/ The promotion is supposed to be aimed at schools and education fields, proving once again that games can be more than just games. No surprise, Valve feels that Portal is