Special buildings are purchased and upgraded here.
(detailed information for all special buildings can be found here)
Tech center
The tech center increases the accuracy and radius of your scans.
Be aware that the cost of scanning also increases with every level. Therefore you should be careful when upgrading the tech center - accuracy has a price.
Casino
A visit to the casino is always worth it. With enough luck you can even with the jackpot that all the players are continuously paying into.
Some say that you can only lose money here - that is surely just a rumor.
Museum
The museum lets you find increasingly valuable loot in lost freight. Only after a certain level is it even possible to find the highly valued giant diamonds and tech upgrade 4.
Training camp
In the training camp you can hire security forces to protect your lucrative mines. Every level increase makes your security forces tougher.
Recycling plant
Here you can recycle many of the looted items. By doing so you can get resources that are otherwise be difficult to produce in great amounts.
Law firm
The law firm is an important building. Unfortunately your workers are not afraid of a lawsuit if an accident happens in one of your mines. With this building you can limit the amount of money that must be paid out in damages.
Mafia HQ
In the Mafia HQ you can hire criminals to damage and loot enemy mines. Every level increase makes your attack troops tougher.
Hospital
The best preventive measure against mine accidents is a hospital. Every level reduces the likelihood of an accident, because your workers are healthier and full of vitality.
Drone research
Drones are a fine thing. But what would it be like if they could pick up lost freight, or build a mine on the scanned location? Both will be possible with drone research at level 10.