It's very confusing to me (which is expected, the only "Age of.." game I played was Ao Mythology, and I didn't like it much)...So many different buildings, units, upgrades, etc. If this is an official release of the demo, I can't see why they didn't have a tutorial (or am I missing it?). I'll keep messing around though, the card system thing seems interesting, and it's obviously a lot deeper than I understand!