Perpetual Testing Initiative

The Perpetual Testing Initiative is a gamemode and campaign which introduces the concept of multiple alternate universes, simply shortened as "the multiverse". Set entirely on testing chambers created by the Portal 2 community on the Steam Workshop, the player once again has to fulfill the role of test subject - this time as silent stick figure Bendy.

The test chambers in the DLC are completely user-generated, using the simplistic in-game testing editor " Puzzle Creator", a much simplified version of Hammer.

It appears that Cave Johnson still lives in the multiverse and Bendy can hear Johnson talking to him from a microphone as he navigates the test chambers. Also, every Earth in the multiverse results with GLaDOS being abolished