Gamefly takes up to 80% off a selection of Deep Silver game downloads for Windows and Mac, with deals starting from $2.49. Plus, coupon code "AUG20OFF" takes an extra 20% off orders of $15 or more. Note that a Steam account is required for most purchases. A couple of best bets:

Saints Row The Third: The Full Package for PC for $4.99 (pictured, low by $15)

Dead Island Franchise Pack for PC / Mac for $11.99 (low by $8)