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Wikipedia - http://en.wikipedia.org/wiki/Portal_(video_game)
Article describing gameplay, synopsis, development, and critical reception. |
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GameSpot - http://www.gamespot.com/pc/action/portal/
Reviews, news, previews, images, videos, cheats, and a forum. |
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http://pc.ign.com/objects/842/842671.html - http://pc.ign.com/objects/842/842671.html
Videos, screenshots, cheats, guide, reviews, previews, news, and a message board. |
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http://pc.gamespy.com/pc/portal/ - http://pc.gamespy.com/pc/portal/
Review, previews, news, screenshots, and movies. |
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GameFAQs - http://www.gamefaqs.com/computer/doswin/data/934386.html
Cheats, reviews, images, and a message board. |