Today brings a continuing look at the behind closed doors E3 2010 demo of Portal 2, with parts two and three now available for your viewing pleasure. The first video showcases the new "Excursion ...

Valve has sent out the latest two Portal 2 E3 gameplay clips today. This time, the clips show off the ‘Pneumatic Diversity Vents’ and the ‘Thermal Discouragement Beams’. One is a giant vacuum cleaner ...

GameSpot may get a commission from retail offers. According to GLaDOS, Portal 2's dry-witted antagonist, scientific achievement is all about cooperation. That's why one of history's greatest ...