Get ready to level up your Tawantinsuyu! The Book of Challenges introduces three new ways to test your empire management skills, perfect for those who have already mastered the base game and are looking for an extra kick. Two of these variants were specifically crafted for the 2021 world championship and are highly balanced for 4-player games, ensuring a fierce and fair competition. One is the Balanced Symmetrical setup, which was the stage for the championship's Grand Final, where we saw player 2 emerge victorious with 179 points. The other is the Balanced Asymmetrical setup, used in the semifinals, where each player position showcased its potential, with everyone having a shot at winning. And for the boldest players, the third variant, Extreme Asymmetry, promises a breathtaking challenge for 3 or 4 players. It offers a powerful start for everyone but demands total mastery to maintain the advantage. If you love Tawantinsuyu and crave more strategy, unique challenges, and replayability, this book is for you. It adds that touch of complexity veteran players crave, while preserving the essence of the game we already know and love.