A perfectly balanced political game for 4 players. If you are going to play it with fewer than 4 players, it loses some of its appeal, but the aging mechanic, along with the tough decisions on choosing which actions to take (and what gender of baby it may give you) is still plenty enough to make it a fun game to play.
I like games that explore and explain aspects of history. An essential characteristic of European history for a thousand years was the Holy Roman Emperor - usually weak but always important and equally hard to comprehend in our modern world. Here is the fun way of illuminating obscure history, with excellent and innovative game mechanics.