The sign-up form for the OnLive Beta is now available. Participants must be 18 years or older, and must have a computer running Vista or XP or an Intel based Mac. The beta is expected this summer, with a full release tentatively the end of 2009.

OnLive is a Games on Demand service which will deliver the latest high-end titles to TVs and computers over broadband through a small set-top box. No downloads, installs or consoles needed.

According to the OnLive website:

• Connect to OnLive with your TV, PC or Mac and start a game
• Your game runs in a state-of-the-art OnLive game server center
• OnLive connects you to game servers through the Internet, instantly sending your controller actions upstream and the results back downstream at blinding fast speeds
• Enjoy ultra high-performance gameplay on your TV or entry-level PC or Mac

Titles already featured on the site include F.E.A.R. 2, Crysis, Bioshock, Prince of Persia, GTA 4 and more. OnLive has signed with EA, Take-Two and Ubisoft.

There is no word yet on pricing, but they have said that they will be competitive with other subscription services such as Xbox Live.

For information on the Beta, please visit: http://www.onlive.com/beta_program.html