The size and state of the PC digital distribution market can be difficult to assess, as platforms and publishers are largely unwilling to share their sales figures. When it comes to The Witcher 2: Assassins of Kings, though, there can be little doubt about where they all stand, as CD Projekt today revealed the RPG's first six months of digital sales figures.

Who came out on top? Steam, by a huge margin, followed by CD Projekt's own Good Old Games.

Read more: The numbers »

Digital distributors already regularly offer mega-savings on PC games but GamersGate intends to take things one step further. Yesterday it announced plans for 'FreeGames,' a "free-to-play ad supported platform for PC and Mac games."

FreeGames will let users download and play games for free, in return for simply watching a "short" advert when the game launches. You'll be limited to having only five free games on your account at any one time, but GamersGate does cryptically mention there'll be "the capability to add additional game." No details on how that'll work, not yet. Read more »