Teotihuacan: Expert Challenges is a series of setups intended to challenge players who are well familiar with the game. Book 3 contains two challenges. Book 3: Noble Challenge Representing a time in history after the completion of the Pyramid of the Sun, this challenge turns the game on its head, requiring a different approach to the game than previously. Book 3: Explorer Challenge This is a challenge for the most experienced players. With a by-the-book setup, collecting masks is usually a secondary means of gaining victory points. The Explorer Challenge promotes mask collection to a prime strategy, and it allows very high scores. Loot Box #1 contains all three Expert Challenges books, bound together to form a 12-page booklet. Don't let the title page saying "book 1" fool you. It only refers to pages 1-4. Page 5-8 is book 2. Page 9-12 is book 3.