Perpetual Testing Initiative now available for Portal 2

Tuesday, 8 May 2012 21:05 GMT By Stephany Nunneley

Valve has announced the free Portal 2 update, Perpetual Testing Initiative, is now available on PC and Mac. The DLC allows players to “easily create, share, and play Portal 2 puzzles,” via the in-game Puzzle Maker. Log into Steam and get to downloading.