If you haven’t already discovered, OnLive now has a mobile app which allows you to use the service on your mobile device and even some games are playable, best of all, you get a free game just for installing the app and logging in.
The mobile application is very similar to the desktop client (or I suppose, the standalone console, too), you will need at least Android 2.3 (Gingerbread) installed and I’m guessing iPhone 4 or above. So, what’s the free game?
Once you have entered your details and logged into the service, after a little while, you should receive an email containing the above.
Here’s a slightly fuzzy video of me opening and demonstrating it on a Samsung Galaxy S.