Sooner or later you will have to explore the wilderness around your city. The gold you will get is important for its development. On your

click to enlarge
way you will meet orcs, undead, goblins and other classical fantasy beasts. Of course, to get the bonus from a specific territory, you will have to kill any monsters that have occupied it. Afterward, you can loot their bodies, getting gold and different items such as armors and elixirs. Sometimes you will find items that improve your city – a whistle for the shepherd for example, which increases the food produced by better sheep control.
You will hardly clear the map alone, so you can order some of the villagers to stop working and come with you instead. You can make a group of three people. They will gain experience and levels as you go, but this is handled automatically instead of by you, the way your main hero levels. The main attributes are similar to many other RPGs – attack, defense and health. Your hero can also improve by learning some abilities which either improve your combat skills, support the city, increase the loot etc.
These are small details you may not notice, because your main goal is to pump that left mouse button.