The Tower expansion for Carcassonne introduces vertical gameplay with 18 new Land tiles and 30 tower floor pieces, allowing players to construct towers instead of expanding horizontally. As towers grow taller, players gain additional strategic actions or can block opponents by capping a tower with a follower. This expansion adds direct player interaction through tower placement and control. Designed for 2-6 players aged 7 and up, games typically last around 45 minutes.