From ROI Wiki

The Westlands are a region of land within the primary continent of Nustrun, on the planet of Offworld, that encompasses a vast area of grasslands and prairie scattered inside of which is a group of cities and towns with a very Wild West theme and personality to them, including an early to mid 1800's Wild West style of technology, culture, language and lifestyle. There is no principle governing body in this region, and each town and city within its borders is independent and each acts as their own city state. The only item they share in common is a classic steam locomotive railway run by Chester Westman and his brother Del.