amazonluna[.]blog/luna-now-available-to-everyone-in-the-mainland-us-more-games-new-features-and-a-special-offer-4afda22f0649
amazon[.]com/luna/landing-page
Luna is Amazon's new game streaming service, where the heavy lifting for the games you play is done in the cloud. Amazon recommends using their own controller, which is on sale for $50, but many controllers will work, as will a keyboard & mouse, and there is a cell phone app that lets you use your phone as the controller.