One of the moons, Lunelle is quite inhabitable, and a rather secret pilgramage is taking place to go to "the promised land." As of yet, there are few inhabitants. The place has been kept mostly secret by the mages that erected their permanent residence there. They travelled there by means of teleport spells for many years. Small towns already exist on this planet Lunelle, which are high in magic due to the fact that the world was first settled by mages, a sort of almost vacation destination resort having created. Lunelle is a mostly forest world, oceans covering less than one half of the surface of the moon. The world has very irregular seasons, due to the fact that the world rotates on an axis which rotates very slowly due to its porous interior, through which lava flows and has tides. The center of the world itself is hollow from about one third inwards toward the crust, the second third being porous caves and caverns, many of which are channels for the flow of magma. The world tends to be fairly warm with snow storms that wander its surface. The atmosphere has a pink tint to it rather than blue. Sunrises and sunsets are brilliant purple and maroon.
The world is a sort of frontier area, with a wild west feel to it, where 'spellslingers' drift into town from time to time. There are gangs of Hells Angels type motorcycle mages, their bikes powered by magically turned shafts. These bikes can cruise up to 48", or roughly 50 miles per hour on flat stretches. The only humanoids that are native to the moon are elves, which travelled here thousands of years ago.
For them this is a paradise with few monsters other than the natural predators of the planet. The monsters that do exist are for the most part subterreinean. The mazes of caves are home to thousands of types of things that go bump in the night, but they only come out to feed noctournally. There is quite a culture of drow elves which live in the millions of caves which interconnect below the surface of the moon. Few kingdoms have been established, mostly due to the lack of people.
The only fairly large town is a space port named Magda Bara, which means in the native tongue of the elves Jaded Sea, referring to the green housetops of the city. Magda Bara has over thirty thousand inhabitants. It is a place of few thieves, a good and clean environment. Little wood is burned for fuel, the wizards using magic heating systems that heat from the floor, adjusted in temperature by command words. Thus the air is clean, even by modern standards.
Magda Bara is a center of space trade, dealing mostly in the unusual and unique. Alien ships from other worlds occasionally dock, trade having been initiated by diplomatic efforts from the city council with neighboring worlds. Lunelle law forbids any aliens to leave the city during their shore leaves. Only humanoid races are permitted to live on Lunelle, and citizenship is on approval of the council.
Ships are not allowed to land anywhere on Lunelle except for the capital city, but many have been known to anyway. Enforcement of these rules is impossible, and many of the alien races take the chance to steal water and other resources from the world which are rare and valuable on their home worlds. Many things as simple as wood can fetch a good price on several worlds, and alien creatures go for big money as pets.
The alien worlds that Magda Bara does trade with are quite varied, from desert to forest to ocean, each bearing their own kind of treasures. Lunelle is kept secret to the general population of each of the worlds in compliance with trade agreements, being secret government projects to most.
Lunelle is rich in minerals. Gold and silver are not uncommon, and gemstones are all too commonplace, thus trade is done in magic for the most part, rather than in gold coin. Lithell Birch is very valuable, and coins made from it are as valuable as platinum in Asterland. To say that inflation has changed the nature of the moon would be an understatement. Visitors to the world are a bit taken aback by the little amount that their gold and silver coins are worth here as well as gems.
The general form of exchance is the mysticoin, a curious coin with the property of extending personal magic on a one time basis. Each coin will enable a mage to cast one spell level of magic. One need only hold one in the palm of the hand and cast a spell, and the magical energy of the coin will be released. They may be used more than one at a time, allowing one to use, for example, five to cast a fifth level spell.
The coin has a face on it that smiles when it has a charge on it, a frown when the charge is expended. Also, when expended, the coin turns an inky black, and is considered essentially worthless. The coin is not the valuable thing, but rather the magic within it.