Jupiter

Jupiter is a planet within the Terran Solar System, located at coordinates 1,3,4. In Ultima II it is possible to visit Jupiter using a rocket ship which can be acquired in the year 2112 A.D., from the post-apocalyptic Soviet settlement of Pirates Harbour.

Description
As opposed to being the gas giant recognized by modern scientists, Minax's Jupiter had a solid surface, and was home to oceans, continents and civilization. The varied terrain sported mountains, swamplands and forests, and a tower and dungeon could be found on the Jovian surface.

More curious, however, was the bizarre Village of the Preppies, a settlement housing inhabitants who appeared to share in the subcultural mores of twentieth century Earth's New England elite. It is unknown if these "Preppies" were of terrestrial or extraterrestrial origin, although it appeared that Terran science was unaware of their existence.

After Minax's defeat and the restoration of the temporal norms, it is not known if the world returned to the vaporous, storm-wracked state known in conventional time - possessing pressure and temperatures which would render it uninhabitable to life of a humanoid nature. It seems a highly likely, however, given the lack of explicit references to a solid Jovian surface by astronomers of the Avatar's homeland.