Each square thing gives out a certain amount of cash. Click them to upgrade them (when you have enough money) or just get some payout! By the way I have no idea how to pronounce the name, and I translated it with https://translate.yandex.com/en/?source_lang=en&target_lang=la (ludus - game) (aedificium - building) Inspiration: Merge games (changed it up quite a lot) especially Merge Tycoon.