Skyrim in the game world, excluding other dimensions, is estimated to be 5+km x 3+km. There is a good chance that the map size will be expanded after release, but even if it isn't, I can still make the map in parts on separate worlds. Ideal would obviously be to fit it into one map, whether that be possible through an update or through modding. I think it should be possible to make bigger maps before I get to the point of it being a problem. On launch, I will be focusing on creating the demo for people to play. The demo will include Helgen, Whiterun, and Riverwood most likely. If I finish the demo before this change happens, then I will focus my attention of creating component packs for the project, including scripts, behavior trees, and structures.