The recent leak of an internal Microsoft document related to the Xbox 360’s successor has brought to light the software giant’s wariness of cloud gaming services like OnLive, which it identified as a “potential acquisition target” in the 2010 document. Of course, no such acquisition has taken place so far. But if Microsoft is still considering buying a cloud gaming company, another less expensive company may be up for sale.

While there is no dearth of solutions for streaming PC-based movies, music and pictures to your TV, the PC games in your personal collection are still “unstreamable.” Enter AfterCAD, and its GameString Adrenalin service, and personal PC game libraries will become just as “streamable” as other media content.

So what exactly is GameString Adrenalin? AfterCAD is calling it “personal cloud gaming.” It essentially allows for PC games to be played remotely from within any Flash- or HTML5-enabled web browser. The company has even posted a video (below) of World of Warcraft being played on Google TV.

"Our GameString technology represents the next generation in cloud gaming as it doesn't rely on downloads, plugins, java or obscure codecs to work. The proof is in the fact it works with the Google TV right out of the box while other cloud gaming services will have to write an app to run it on,” said Chris Boothroyd, CEO of Aftercad.

“For Game Publishers looking to leverage the cloud to spice up the production values for Flash based social games, it is clear our approach is the way of the future and the way to go."

Cloud gaming startup OnLive has been vacillating on its monthly subscription fee from its very inception. While it initially set out to charge $14.95 per month for the streaming games service, it not only lowered the monthly fee to $4.95 just before launch, but also offered a free one year subscription to early adopters – those who signed up during the service's inaugural month. But the company seems to have finally found a solution to its pricing conundrum.

OnLive has permanently abolished the monthly subscription. According to Steve Perlman, founder and CEO of OnLive, this is what the startup always wanted but was waiting to for the right moment.

“Although we wish we could have confirmed no monthly fee from the get-go, pioneering a major new video game paradigm is hard: we had to first grow to a large base of regular users before we could understand usage patterns and operating cost,” Perlman wrote in a blog post.

“Now that we’ve reached that stage, we can confidently say a monthly fee is not needed, which deserves a double WOOT! WOOT!”