Forza Horizon for a measly $14.99. Playground Games and Turn 10 Studios' racer released just under a month ago, so 75 percent off its regular price is brimming with Black Friday goodness.
Jordan got revved up for Forza Horizon in his review, speeding all the way to four out of five stars. He said that, while there are a lot of "little, annoying things" about it, Forza Horizon is "a massive toy chest full of hyper-accurate hot wheels."
Update: As commenter JoshHandrich notes, Microsoft Store has a few other handsome Black Friday offers, the lot neatly collected here. Standouts include Dance Central 3 ($14.99), Borderlands 2 ($24.99), NFS: Most Wanted ($24.99), and Dishonored ($24.99).