Remember last year when Valve said it was working on a level editor for Portal 2, but did not give a date for when we could have it? Well, wonder no more as the level editor for Portal 2 will arrive on May 8th in the form of the Perpetual Testing Initiative DLC. This free content will only be available for the PC and Mac, and allows you to "easily create, share, and play Portal 2 puzzles." The DLC contains an easy-to-use level editor that will let you create any number of "mind-bending puzzles" to test your friends or others on Steam. You can upload your puzzles to the Steam Workshop to allow other Portal 2 owners try them out and hopefully leave you some constructive feedback if there are any necessary changes. This level editor is certainly a long time coming, but soon everyone will have an easy time creating new puzzles for Portal 2.