Scribblenauts Unlimited tells the story of Maxwell, who has to save his sister from a spell after playing a prank on an old wizard. To do this, he travels across the world, helping people and collecting items to break the spell.
The gameplay involves solving puzzles in levels where multiple characters with quests appear. Players use the notebook to spawn objects or people, applying adjectives to modify them. New features include riddles in the menu that require guessing what item a category refers to.
Scribblenauts Unlimited introduces an object editor where players can create and share their own items online.