I know I'm kicking the hornet nest

Next week Microsoft is having a promo where you buy a bone and you can get any game for free. I'm seriously considering it, as if I buy it from bestbuy I'll also get a year of their 20% off videogames thing and they still have shitty Madden bundles that i could probably sell the code.

I own a decent pc, a wii u, and a ps4. I don't plan on paying for xbox live and the only games that interest me are dead rising and killer instinct. I like all genres except for realistic sports. Should I buy a bone or can you talk me out of it?