Compared to previous Scribblenauts titles, Scribblenauts Unlimited has a more extensive backstory, and reveals regular protagonist Maxwell's reason for collecting Starites. In the opening scene, narrated by Lily (Jennifer Hale), the player learns that Maxwell's parents gave him a magical notebook that can create any object by writing in it. Maxwell's parents show concern that he and his 41 siblings are becoming spoiled, however. One day, Maxwell comes across an old man who appears to be hungry. As a joke, Maxwell uses his notebook to create a rotten apple, and gives it to the man. Angered, the old man scolds Maxwell for being spoiled, and places a curse on Maxwell's sister Lily, causing her to slowly turn to stone. Maxwell must obtain Starites to free her from this curse. He can obtain those Starites by helping people, solving their problems.