Cheats and Walkthroughs
Portal 2's latest co-op trailer answers the question: Where do bots come from? Co-op will be a major addition to Portal 2, a gameplay mode that was lacking from Valve's Portal and its re-release Portal: Still Alive. I imagine you'll be spending quite a bit of time in Portal 2's co-op mode, so go ahead, meet your bots.
This trailer doesn't really give us any new information but it does tell us more about the types of characters we'll be seeing in Portal 2. The robots in the trailer, despite being machines, appear to have unique personalities. The orange robot is ready for adventure while the blue is hesitant.
Portal 2 takes place hundreds of years after the events of Portal. You return to Aperture Science labs to find out GlaDOS isn't as dead we thought. The lab has been updated, nature has overrun the building, turrets are deadlier and the robots are cuter. Portal 2, which has already seen one delay, is one of the most anticipated games of 2011. It will be available for the PC, Mac, Xbox 360 and PS3 on April 20.