Aperture Science Perpetual Testing Initiative, May 8, 2012.


This will include a puzzle designer and distribution of puzzles through Steam Workshop. More info on the official Portal 2 blog:


Skyrim fans, be sure to check out the Steam Workshop for Skyrim, where you can find a little Portal 2 crossover mod: http://steamcommunity.com/sharedfiles/filedetails/?id=7375
Shared publiclyView activity