FluxWorld is a Futuristic Space Port and City set some 300 to 500 
years in the future on a far away planet. 
Expect some alien artifacts to be laying around.
 (if not some aliens themselves)

The FluxWorld SpacePort itself is 5 stories tall internally, and 
there are many places to visit and things to find inside the 
SpacePort itself. There are also many other areas accessible from 
there (indoor and outdoor) Be SURE to think three-dimensionally
as many things are as likely to be up or down as they are east, west,
northeast, etc.
 
There are other areas that are accessible only by ships on a river, 
as well as access only by air, and space to access the space station
in orbit as well as our two moons (which are growing daily).

We have player and creature kill, bots that just converse, wearable
clothing, mining (to earn money), repairs to devices on the 
electrical grid (earns money also) and more.

There are puzzle areas (Quests), where you might need certain objects
to proceed. Finding these hidden areas also pays.