Is it possible to link the Northwest most places (at an edge of the world) to the corresponding Northeast most places? Does that makes sense? Can the outside edges of Oberin link from top to bottom and left to right, to create a round world? Can the corresponding tiles be rendered where the stars now appear, then when you cross the boundary you appear at the opposite side of the map? It might be impossible to display active characters on the other side of the map, but an approximation of the land (ocean) beyond could be cool, too. The area's at the edge of Oberin could be the equator, full of mystery and danger. If you approach the equator you might see land (ocean) devoid of any creatures, but if you cross the line (and jump to the opposite side of the map) there might be some Sea Serpents waiting there. Maybe that would appear buggy? It could add a new dynamic to the game.
I was considering doing this
I like. It would seriously mess with my sense of obie geography, but I like.
Reminds me of Final Fantasy III. You start off on a flat world, but eventually it turns out that you've been a giant floating continent the whole time. When you finally manage to fly down to the surface world, the map is then spherical and 'linked'.