Blue Crystal is set entirely in a city called Vastii. I’ll touch on that next, before I get down to the basics: food, water, clothes, shelter, light. I should mention first that this is a large city, complicated, and I should probably take two weeks just to cover the different levels, not to mention some of the notable buildings.
So, this is a brief, incomplete overview to give an idea of the setting before I delve into other essentials.
Vastii, the king’s city: ruled by the Kanichende family, whose crest is a serpentine dragon in gold curling across a field of stars. Vastii is built into the ground, into the shaft of a now dormant volcano and covered over to protect the residents from the cold on the surface. Temperatures here range from roughly -5 to -20 degrees Celsius, depending on where in the city you are. There are places even warmer deep in the earth, but the trade-off is sulfur and other various forms of gas. Dig too far down, and eventually magma will be rediscovered. References to glowing rivers are a very common form of profanity.
Vastii is built around a very large, circular hole in the earth, called the Pit. Along the Pit runs a long road that descends counter-clockwise, always keeping the open ledge on the left as it goes further down. This is called the Spiral Highway. Carts, shipments, anything moving from one level of the city to another will be transported (under heavy guard) along this route. Though it’s a good path to take for someone who doesn’t wish to get lost in the tunnels, it can also be very dangerous. The easiest way to commit a murder in Vastii is to shove a man off of the edge, and there are no rails.
At the very top of the Spiral Highway is the palace, which is build into the stone at the top. As the residents of Vastii had carved and dug their city rather than building it per say, the idea of building roofs are lost in their architects. They prefer to make elaborate facades without defining an external structure, which would take much more work. Across the Pit from the palace is the university, which also takes up a space on the level below it. Not far from that is the Arena, which takes up four levels and provides stairs. Using the arena, a man can move quickly from the fifth level of the city to the second.
Each level of the city is defined by the palace. The palace begins the first level, and where the road moves under the palace walk is where the second level begins. Furthermore, they define their addresses by level, then radial degrees, then distance from the edge of the Pit. The palace, for instance, is 1:00:75, with ’75’ being the distance in yards to the palace gate (through a long path of sculpture and rock gardens). The University is 1-2:175:05, indicating that the structure spans two levels, is almost exactly halfway across the Pit from the palace (175 degrees), and begins only fifteen yards away from the edge. The Arena is at 2-5:220:00, as the Spiral highway moves through the Arena’s facade.
Beyond the Arena is the craftsmen’s district, and after that, the very humble cave dwellings of the common men. Most don’t bother with addresses down there; once you get past the seventh level there’s no point in counting. No one respectable lives down there, no one who would know or use an address. Of course, there are numerous side streets that link to the Spiral Highway. Near the bottom they move like the tunnels of burrowing insects, the middle is filled with nonsensical but helpful routes to spare travelers from needing to take trips around the highway, and the top levels have long, straight avenues, each home with its own address given by the city’s cartographers.