Regardless of what you are going to build: a small house or a skyscraper, you need building materials. In the game Build Castle 3D, you have conceived a grandiose project - the construction of a luxurious royal castle. It should become a masterpiece of architectural production and stand for centuries, glorifying the work of your hands. Three hardworking builders in helmets are already ready for military work, but they have nothing to manipulate yet. You have a truck that is at the start and ready to hit the road. Your task is to direct him to the places where the slabs for construction lie. The car must collect them to the maximum and deliver them to the site, and there the guys will figure out what to do with them. When passing empty gaps in the track, some of the slabs will have to be spent on the construction of the bridge.