The wait is over: the second portal 2 dlc is out: The Perpetual Testing Initiative.
Help Mr Johnson out to create tests for Aperture science in the multiverse by using the in-game easy map editor. Or help him out testing them by using the steam workshop, and letting him know a test works or not .
So, boot up steam and start downloading this new DLC now! It’s completely free!
Once you finish your test chamber and you want to share it with us you can use the
Promote your workshop map here thread.
Cave Johnson, back to work!