Well, not entirely free. You've got to spend $25 there first, but the bonus is yours if you do, per the clothing retailer's Black Friday ad.
The promo follows last year's giveaway of Lego Rock Band. True, if you don't have Kinect, this winds up costing $175 for a free game. But if you're shopping there anyway, maybe you can flip it for game store credit elsewhere in the mall. Though it's probably a disc only. This deal is getting worse all the time ...
Old Navy Black Friday Ad [Black Friday Ads, via That Video Game Blog]