OnLive's cloud gaming service will be integrated into all Google TV devices, the company has announced.

OnLive Viewer, which lets you watch the action from other OnLive gamers' connections, is available now for all current Google TV devices but full OnLive gameplay will be coming to all future devices built around the standard.

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Google TV devices including TVs, Blu-ray players and Media Streamers will have OnLive's service built in and will offer  on-demand gameplay of around 200 console-quality titles, the company said. 

Signing up to OnLive is free and you'll be given the choice of renting or purchasing games - whether you rent or buy and the specific game you choose will dictate how much you pay.

"OnLive integration into Google TV is a huge leap forward for videogames," said Steve Perlman, OnLive Founder and CEO.

"Consumers have come to expect instant gratification with music, movies and video. Now, with OnLive, players in the US and soon in the UK can just as easily stream the highest-quality games to their Google TV devices for play instantly on demand, without discs or downloads."

Earlier this week, OnLive announced OnLive Desktop, a service that acts as a remote desktop client and will let you access Microsoft Office programs on the iPad. It launches in the US today and apparently will come to the UK "soon", though no exact date has been offered.