Finished Portal 2 but haven't had your fill of Aperture Science testing chambers? Aside from handing out a slew of free content in the coming months, Valve is releasing the Portal 2 Authoring Tools -- essentially giving PC users access to some of the nuts and bolts behind the developer's critical ...
Posted on May 17th 2013 6:45PM
Posted on May 17th 2013 3:45PM
Posted on May 17th 2013 12:00PM