For those in need of a quick refresher, OnLive is a cloud-based service that allows you to play high performance games without high end hardware. The games you play are essentially being streamed to your PC, Mac, or TV from the nearest server as you use your device for button inputs. Ideally, the process is so fast and latency free that OnLive mirrors the experience of playing a game locally on a PC or console.
This same functionality is being brought over to all iOS, Android, and Kindle tablets starting today. Cellular devices (iPhone, HTC, etc.) will also be able to run OnLive with older standards such as 3G and 4G connections. Just know that Onlive isn't best suited for a 3G or 4G connection.