Steam’s ‘Autumn Sale’ begins today

Steam has kicked off its Autumn Sale today. New deals and offers will run daily until 27 November, “hundreds” of offers are promised.
Today’s deals include 75% off Mass Effect 2 (£4.99), 66% off Portal 2 (£6.79), 66% off Duke Nukem Forever (£5.09) and 50% off Call of Duty: Black Ops (£19.99).
Head over to Steam for the full list of today’s deals.