Main Building
The main building is the foundation and the heart of your isle. Just by upgrading the main building, you have access to other buildings. Furthermore, attackers will first have to destroy the main building, the
stone wall and the
watch tower (without having to completely raze the latter two) to be able to conquer your isle (cf.
conflict & settlement).
The main building can be upgraded up to level 20. Each level yields 5 points.
Furthermore, some buildings and units which are not available right from the start are accessible once the following levels of the main building have been completed: