Talk:The Simpsons: Tapped Out/@comment-101.99.187.15-20151010202113/@comment-26143371-20151010204228

Each level needs specific nightmares. E.g. if you need Bunnies for the next upgrade, make sure you make Milhouse tell the story so that Bunnies are spawning. The nightmares needed for the next upgrade is indicated with an icon at the beginning of the progress bar.