Steam is offering free games to PC users with NVIDIA or ATi graphics cards. This should include most people with add-in graphic cards and those using PCs designed for games in general. NVIDIA users get Portal: First Slice (the first 11 levels of the game), Half-Life 2: Death Match, Half-Life 2: Lost Coast, and Peggle Extreme while ATi users get Half-Life 2: Death Match and Half-Life 2: Lost Coast.

It is actually quite simple to act on this offer: First, go to your Control Panel and see if you have NVIDIA or ATi hardware on your computer. There should be a control panel for one of them if you have it. Depending on which graphics card you have, visit Steam's NVIDIA promotion page or Steam's ATi promotion page and click on the "Get it Now" button.

If you are already a Steam user and have it installed, you can just click the button that says so and run the program it downloads with Steam. It will automatically detect your graphics card and the promotional games install window should pop up. If you do not have Steam, click the button to install Steam and create a free account. After that, it should automatically detect your card and an installation prompt will pop up. If this does not happen, just visit the page again and click the other button.

This is a limited time offer with no noted end date, so plan to act sooner than later.

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