Innovative, addictive. AOM was a very polemic game and almost an encyclopedia.
AOM is quite faithful to its myths' origins and aspects in every way, almost as an encyclopedia. The game brings to the player a world of great stories and tales that actually "existed" in the real world, from Egypt to Greece and Northlands. As in every game, its factions must be in balance, so as the god powers and heroes in Age of Mythology. The camera's dynamic and cinematic views also were a great surprise in AOM, since it is one of the first 3D strategy games with versatile cameras to come into the market.
The game's campaign is quite addictive and becomes more and more interesting by each level you complete. Campaigns like the main one can be easily created in the game's map editor, with triggers and cinematic tools.
I recommend this game to any RTS or Age of Empires' fan since its quite a good and funny game.