Teotihuacan: Shadow of Xitle adds ten new technologies and ten new starting tiles to the game.
New technologies enhance advanced strategies and add incredible variety to the game experience by doubling the number of possible technologies. During set-up, you randomly choose six technologies as usual, ensuring that no two games are alike!
The new starting tiles offer new starting options for you to experiment with, further deepening your overall game experience!
All content is compatible with both solitaire play and the first expansion, Teotihuacan: Late Preclassic Period.
—description from the publisher