Guilds

Every town can be the home of one guild once they have the required technologies.
 * Future feature

Choices
Picking a guild can be vital in running a successful town since you may only choose one. Another thing to be considered is that each guild type can only be located in one town at once.

Benefits
Each guild is completely unique and targets a specific group of players. Some are built around combat such as assassin's guild or mercenary's guild. Towns also could pick a guild that focuses on Religion, Technology, Economy, Health Care, etc.

Costs
A guild does not come without it's own costs. To own a guild you must first designate a district for it as well as paying an initial payment towards the founding of it. Another thing to consider is that a guild also features a recurring cost that must be paid or you lose the guid and it's benefits.