Probably thanks to the holidays, NVIDIA is listing a ton of great games at 50% off this week on Google Play, including DOOM 3 BFG Edition ($5) and the Half Life 2 episodes. Each of these games will require you to own a compatible device, which currently, is the SHIELD TV, SHIELD Tablet, and SHIELD Tablet K1. Additionally, you will need a SHIELD Controller to play.
On top of DOOM 3 and the Half Life 2 titles, you can pick up Portal for just $5 (down from $10), and Contrast for $7.50 (down from $15). Q.U.B.E. and Pix the Cat are also available, priced at $5 a pop.
Below, grab the links to all of the games available at a discounted rate for your Tegra-powered device.