Game developer Valve has launched a new "Early Access" program that allows games on both Mac and PC platforms to purchase and play and handful of new games that are still in development. The idea behind the program is to give the developers feedback in pre-release, and in some cases add to or otherwise affect the game's final development. The pricing of each game includes a copy of the finished release on Steam, but only three of the current 12 Early Access games are compatible with the Mac.