Following more than a year of media demos and beta testing, cloud gaming startup Gaikai is letting the public try out the fruits of its efforts: Mass Effect 2, Dead Space 2, Spore and The Sims 3, all playable from within your web browser. That is, if you have the bandwidth -- we don't apparently. (Granted, we're on gratis Wi-Fi here at GDC.)

You might have better luck at home, and you can visit Gaikai's site where you'll be prompted to launch Mass Effect 2. Taking a survey about the service will grant you access to the Dead Space 2 demo. Spore and The Sims 3 are here and here, respectively.