The game I ran (and may revive) was set in the Lunar Empire, roaming
over a considerable portion of it. Starting with a trip down the
Oslir to Good Shore, taking in Eol and Elz Ast, before heading South
again.
The game I am currently playing in is in Prax - we're an early Lunar
expedition down the Zola Fel, just after the conquest of Pavis.