General Dominions 3 comparison...

[Morkilus]

It's more of a wargame and/or board game than a 4X, which you seem to be looking to compare. I'm pretty confident in saying it's like nothing you've ever played in terms of complexity and depth. People are still trying to figure out how to beat each other consistently. If you can get over the UI and learning curve (and any hardcore strategy gamer will), you'll find plenty of gaming goodness. It's by far the most-played multiplayer game in my gaming history.