Although it worries me that you all wanna get a game with it even before the game of the original inventors of this unique gameplay is released.
I think they deserve to earn money with it before others start to mess around with that idea!
I don´t think the portal creators invented that kind of gameplay. I have seen alot of games with portal "gags" and even a tech demo game, where you can walk or throw things through a portal and when it comes out of the other portal its smaller/bigger, depending which you use. And even more impressive is. If you put something into the portal you can see it comming out of the other portal. If you walk though yourself get smaller or bigger. But the tech demo was full of interesting stuff, like some kind of clay, which you can use to build objects in realtime.
