The Empire Saga
Bellan is a medium terrestrial world covered mostly in swamps. There are many amphibious creatures that live here but the dominate sentient race is the Bellanians. The majority of the Bellanians live in large urban centers which can be as large as 200 miles in diameter. These sprawling metropolises have a distinct feel to them and, though there are sky scrapers that loom over the city scape, most of the structures are small and have a natural look to them.
The Bellanians trade mainly oil and natural gases which are gathered from the swamplands around the world.