Basics
When you begin the game, you will be given a keep (a castle with a town). It will be at the lowest level, and your job will be to build it to the highest level you can. To do this, you will need to construct multiple buildings, develop farms/mines/quarries, establish troop training tents, and build troops. You will also need to farm outside your keep, explore relics, attack monsters, and eventually attack other keeps. Finally, you will need to do all this without being successfully attacked yourself - which entails making sure you have a truce (bubble) over your keep at all times.