Last week Valve announced that gamers could unlock Portal 2 earlier than the projected Tuesday 19 th release date by playing 13 indie games that they bundled together to make The Potato Sack .
For fans who cannot stop thinking with portals, you’ll be happy to know that Valve’s hotly anticipated first DLC (Downloadable content) pack for Portal 2 will be available entirely free of charge. That’s regardless of whether you have a PC, PS3 or Xbox 360 version of the game. (08/19/11) UPDATE: It’s here!