This doesn't have that magical "coordinate an army" feeling that the Ants contest had. :(
The rules are very simple -- you control a hero, and you fight other heros to capture mines which give you gold. You can trade gold for health in taverns.
I was also perplex the first time I entered this project.
You would be surprise how this simple rules is already quite challenging.
This game is fully observable and also determinist, which give way to make much more complex AI I think. I see it a bit like Chess: Pretty simple rules but there is still a fight to have the best AI in chess.