Romance of the Three Kingdoms IX in the Strategy genre.
When it comes to Strategy, Romance is usually nowhere in the conversation. When it comes to best ROTK games, ROTK IX is usually nowhere in the conversation.
But honestly I loved it the most. The start is always brutal and barbarians take some tuning, but otherwise pretty much perfect. There are multiple avenues to victory but it all depends on your decisions and strategical ability to overcome larger countries. There are multiple scenarios and countless goals you can choose for yourself. I wish I could play it now, but I don't have it with me anymore.