If you haven’t seen it already, you should really check out Valve’s latest Aperture Science video. It teases Portal 2’s new two-player co-op mode and promises good times with puzzles, portals and pals. Also, don't forget to check out our recent preview for our impressions of the new co-op mode from PAX 2010.
Portal 2: Co-op demo impressions from PAX 2010
More reasons to want Portal 2, if you didn’t already have enough
Best homework ever: Portal recognized as a legitimate academic text
The cake is not a lie. It’s an insight into the human condition. Seriously