Portal 2 Perpetual Testing DLC Out Now

Valve’s free DLC for Portal 2 titled Perpetual Testing Initiative is now available for PC and Mac. For those who don’t know, the DLC is basically Portal 2′s own level creator and will allow players to “easily create, share, and play Portal 2 puzzles.” Is it not simply awesome?

In other news, Portal 2 has just reached 4 million in sales figures which isn’t breaking any records but does show that what is one of the best games of 2011 and certainly amongst the best of all time is actually selling in volumes somewhat worthy of its status.

By the way, I’ve added the video from when the DLC was announced, as narrated by the one and only Cave Johnson.