66 percent off Portal 2? Yes please. Valve has jumped on the Black Friday week sales bandwagon and kicked off a sale today.
Lasting now through to friday, the Steam Autumn sale slashes as much as 75 percent off a different selection games every day.
The deals are rotated, so today's deals won't be available tomorrow so get on it quick.
Today highlights include Portal 2 for £6.79, and Mass Effect 2 for a fiver.
Hit the source link for the full list.