Peasants : they simply come to visit, bring them to the floor they demand and they will give you money for the ride. If you open the door you will have different opportunities depending on the NPC's type :
Sometimes NPCs will bang at your door located at the top of your castle. The orange floors are 'special floors', they do not produce anything but can be used to spawn special units such as dragons and unicorns in exhange for in-game (buyable) currency. The white floors are 'lodging floors' they house up to 5 workers. The blue floors are called 'service floors' their products are service related. The purple floors are called 'crafting floors' they produce various items related to craftmanship
The yellow floors are called 'entertainment floors' their products are related to entertainement in a general manner. The green florrs are called 'food floors' their products are related to edible things in general. The red floors are called 'royal floors' their products are related to the kingdom's management. There is 7 different floor types available : You build your kingdom floor by floor, choosing each time which floor type you want to build. In this game you get to rule an underground small kingdom by issuing construction orders and managing a working population.į2P with in-app purchase of virtual currency