The Piper's Worldlet was a small world that The Piper created after he was cast into The Void. Its primary purpose was to prevent his destruction from Nothing, but was also used as his main base to plot his revenge on The House and create an army, known as the Newniths, which he believed would defeat the Glorious Army of the Architect in combat.

Not much is known about the worldlet. It was visible from the gates of the Great Maze, and was destroyed sometime between Sir Thursday and Lord Sunday.

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