Project SHIELD gives us the cutting-edge ability to bring a huge free-to-play PC game like Hawken to the handheld gaming audience.

ENGADGET: NVIDIA unveils Project Shield, a Tegra 4-powered Android gaming handheld

Speaking of Free Realms, Sony Online Entertainment has gathered over 17 million registered players for its free-to-play game across PC, Mac, and PlayStation 3 since 2009.

FORBES: LEGO Universe Latest Online Game to Adopt Free-to-Play Business Model

If sometime far in the future, Blizzard shuts down the Diablo III servers how will we play our PC version of the game?

FORBES: SimCity Meltdown: What Always-Online Says About Game Ownership In The Digital Age

The PC game, called Shroud of the Avatar, is scheduled to be ready to play in October 2014.

BBC: Million dollar appeal on Kickstarter for Ultima sequel