I found the game interesting because you often had several maps in one single mission, your own and the enemies and the overworld map that interconnected the personal maps for each faction fighting that mission.
There also supplies to worry about when setting out on campaign.
Every faction had their own wall that that was built from the start of the map, so siege equipment were also required.
There were Heroes with different abilities that you could train and level up.
And a very interesting art style.
Similar to Age of Empires but less unit spammy, definitely a unique experience.