The idea is that Players will be able to create maps. And other players as you and me will be able to play the created maps in Portal 2.
The "Perpetual Testing Initiative" allows players to easily create, share, and play Portal 2 puzzles. The Initiative comes with a simplified puzzle maker that allows that creation of mind-bending puzzles without ever leaving the game.More information about map editor:
"Perpetual Testing Initiative" will be available for the PC and Mac on May 8th.
Если вы есть ВКонтакте, то советуем подписаться на страницу Steam.http://vk.com/steam_vk
So lets see what will happen next...
Portal 2 official web site: http://www.thinkwithportals.com/