Need for Speed: The Run
Price: $4.99 (75% Off)
FPS games like Battlefield 3 and Medal of Honor: Warfighter have made great use of DICE's Frostbite 2 engine, but Need for Speed: The Run really puts it through its paces by tackling a completely different genre. It definitely isn't worth full price, but for under $5 it's worth a peek.
If that's not enough to entice you, the rest of the Need for Speed franchise is also on sale and any purchase includes a $5 voucher for the new Need for Speed: Most Wanted launching on Oct. 30th.