Readers can discover all the foul facts about the Angry Aztecs, including why the Aztecs like to eat scum, when the world is going to end and how to play a really violent ball game. With a bold, accessible new look and a heap of extra-horrible bits, these bestselling titles are sure to be a huge hit with yet another generation of Terry Deary fans. History with the nasty bits left in! 2013 is Horrible Histories twentieth anniversary.