Carparthia III, is a fantasy sci-fi story written by Ian Fox (aka Zelgadis on Simtropolis).
The story follows the adventures of six friends as they are transported away from their home planet to the despotic moon Yseri. Each in their own very different ways must then find the will to not only survive, but face the many and varied challenges that transpire along their journey.
The background scenery, and cites in the story take their inspiration from Simcity 4.