Puzzle Creator

Unreleased The Portal 2 editor is an upcoming feature to Portal 2, allowing the creation of Singleplayer and Co-op levels within an in-game editor. The editor was first mentioned within Portal 2 - The Final Hours, "[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". It is expected to be included as part of a major update to Portal 2 in early 2012.