Last month the OnLive streaming PC/Mac gaming service announced its PlayBack service with a number of games that users can play for just a $9.99 monthly fee. Originally the service was to start on January 15 but today OnLive sent over word that the PlayBack service will still be in its free beta phase through January 31. The free beta was also open just for users of OnLive's MicroConsole hardware but the Playback beta, and all of the games in its lineup, is now available for all OnLive users.

The library of games that will be made available on the PlayBack service will also continue to grow in the next couple of weeks, according to OnLive, with titles like Lego Batman, Unreal Tournament 3, World of Goo, Prince of Persia and NBA 2K10 joining the lineup.