This is the demonstration of Portal from Valve's presentation at the EA Summer Media Event. It was as much overshadowed by the announcement of Team Fortress 2 as it was unfairly overshadowed by it. Yes, this is very much inspired by Prey's cool-ass portal system, but Human Head Studios certainly didn't explore the mind-bending infinite dimensional paradoxes of portals like this.

Holy crap, this looks neat. Is there any chance of getting this implemented into Half-Life 2: Episode Three? Florian Eckhardt

Contact information for this author is not available.