If you're going to be picking up a NVIDIA card in the next few months, you'll get some pretty sweet games for free. In some cases, you can even get $50 to $100 off the NVIDIA Shield.
NVIDIA had an event in Montreal where they announced the bundles. It breaks down to this:
Between October 28 - November 26th, those that pick up a GeForce GTX 660, 670, 680, 690, or a 760 will get Assassin's Creed IV: Black Flag and Splinter Cell: Blacklist from participating etailers and stores. In North America, there will also be a SHIELD bundle which nets you $50 off a SHIELD.
For those going high end, buying a GTX 770, 780, or a TITAN will get you Batman: Arkham Origins as well. Here in North America, the SHIELD discount for this tier is $100.
You'll be getting up to three great games if you are going to get a NVIDIA card in the next few months. Pretty good deal if I do say so myself.