Puzzle Creator

Unreleased

The Puzzle Creator is an upcoming feature to Portal 2 that will be available on May 8th, allowing the creation of single-player test chambers within an in-game map editor. The editor was first mentioned within The Final Hours of Portal 2, "[An in-game level browser won't be of much use unless] Valve figures out how to make designing Portal 2 maps an easier process. It has a plain there too, it comes in the form of a simplified level editor [...] a Photoshop for test chambers".

On the 27th of October, Valve published a blog post on the official site referring to the editor as the Puzzle Creator.