When you fire up the new version of Geforce Go you'll see a virtual desktop and can load up a wide variety of gaming clients from Steam to GOG to Uplay, accessing your own libraries of games by logging in with your own IDs. Nvidia's goal for the service is to allow users to enjoy games at the fidelity offered by a top of the line Geforce GPU, even if they don't have high powered gaming rigs - or the Shield family of devices. Catalogue details were not revealed during the keynote. The on-demand service will launch in March, and will cost $25 for 20 hours of play on a GTX 1060 PC, or 10 hours of play on a GTX 1080 PC. Nvidia announce Geforce Now for Mac and PC at CES 2017 today. Geforce Now is a new cloud-based streaming games service from Nvidia.