A lot has been made of the fact that Portal 2 will be significantly longer than the original. Having watched the latest instructional trailers, we think we've discovered how. While both trailers illustrate puzzle solutions in under two minutes, we're guessing it would have taken our top Joystiq scientists several hours to come up with the same solution. Watch and be amazed.
Portal 2 is the sequel to 2007's Game of the Year and draws from the award-winning formula of innovative gameplay, story, and music that earned the original over 70 industry accolades. Features single and multiplayer co-op modes.