Valve recently announced that a Portal 2 DLC titled “Perpetual Testing Initiative” will be available for the PC and Mac on May 8th.
The free DLC allows players to easily create, share, and play Portal 2 puzzles. The Initiative comes with a simplified puzzle maker that allows that creation of mind-bending puzzles without ever leaving the game!
The puzzle maker can directly publish maps to the Steam Workshop where users can browse, vote on, and select to play them. Selected puzzles will automatically be downloaded and installed inside Portal 2.