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Green Man Gaming has a few deals up for the weekend.
Make sure to use their 25% off voucher GMG25-UAAHK-6AI9S to get the prices listed below:
Battlefield 3: Premium Edition (NA) = $30.00 (Requires Origin)
Bastion = $2.81
Grand Theft Auto IV = $3.75 (Uses GFWL)
Grand Theft Auto IV: The Ballad of Gay Tony = $2.81 (Uses GFWL)
Grand Theft Auto IV: The Lost & Damned = $1.87 (Uses GFWL)