It looks like NVIDIA is trying to get more people interested in its Shield portable Android gaming system. While it is a cool device, its really has not caught on all that well. To help gain attention and hopefully sales of the devices it looks like NVIDIA has worked with Valve to bring both Half-Life 2 and Portal to the Shield.
NVIDIA has just announced their GeForce GTX Holiday bundle at the “Way its Meant to be Played” event that is going on in Montreal. The NVIDIA holiday bundle would be announced for a variety of GeForce 700 and GeForce 600 series cards.