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Portal, free download. Portal: An unforgettable 3D puzzle experience. Portal is a fantastic 3D puzzle game set in the strange and frightening laboratories of Aperture Science.

Reviews and free software downloads for Windows, Mac, Palm, Pocket PC, and Mobile Phones. The best programs and games. Buy software directly online.

YouTube is a place to discover, watch, upload and share videos.

Mod DB covers the game development scene across all platforms PC, XBOX, Playstation and Nintendo serving up downloads of the best mods and other indie created content.

Portal: Prelude, the official free Portal modification website. Download the game, discuss in the forums and access a lot of goodies.

Kongregate has free games that you can play online. Choose from thousands of free flash games. Complete online game achievements to win badges.

Information about Valve

Download Free Games has over 1,000 high quality and safe game downloads & free online games. Find a fun game, download free trials, watch game videos, read user reviews, or play a free online game in your web browser!

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GameStop has a huge selection of new and used games at fantastic prices. Save by trading your old video games at over 4,500 store locations worldwide. Shop online at GameStop.com for popular PS 3, PlayStation 3, playstation3, PS3, PS 2, PS2, PlaySta...