Aztecs (Age of Empires II)

Gameplay
The Aztecs are a very unbalanced and interesting race: on one hand, they lack any access to cavalry technology, including all stable units and cavalry archers; on the other, they possess some of the strongest infantry coupled by indisputably the best monks in the game. For some, the Aztecs' lack of cavalry technology is too much of a flaw for the civilization to deal with; however, the Aztecs can be very rewarding to play with once the player is used to their strengths and weaknesses.