Zingrad: The game is comparable to the older Settlers, really. It's a fun and semi-realistic game in that you can't just build a barracks and train troops there. You have to build a pig farm, and then make leather and sausages out of the pigs. Then you tan the leather to make leather armor.
You also need an iron mine, and you have to smelt the iron and then craft it into a spear or a sowrd, and then when you have all that down, you can create a troop. And it becomes more complex as you get more complex units. The game has a very slow tempo, but it's incredibly fun to look at your bustling town go about doing their jobs.
This is very first game on my first PC! :) I have played it for HOURS! It just sucks you in... And as was said: its pretty cool to watch your citizens how they produce stuff... Like butcher making sausages :D