13. The Black Cauldron (1985)
The Black Cauldron was Disney's attempt to grow up, trading musical numbers and cute sidekicks for actual stakes and genuine darkness. The film follows a young pig keeper trying to stop an evil king from using a magical cauldron to raise an army of the undead, and it commits to that premise with a seriousness that feels almost alien compared to Disney's usual approach. Characters actually die, the villain feels legitimately threatening, and the whole thing has a medieval fantasy atmosphere that Disney had never tried before and hasn't really attempted since. It bombed so hard that Disney buried it for years, but that failure came from audiences expecting something completely different, not from the movie being bad. | © Walt Disney Pictures