Free 'Portal: First Slice' Game Download by Steam

[spazntwitch]

As of today, all owners of Nvidia chipset graphics cards can now download a free, extended demo of Portal through Valve's online distribution service, Steam. Valve noted the offer will be available to all Nvidia graphics card owners, and a link to the offer will also be packed in with Nvidia driver updates.

http://www.steampowered.com/nvidia/