In the Starshine Legacy games
The Starshine Legacy games seem to take place in similar areas, usually around the school that the main characters attend and Jorvik Stables, as well as the Dark Core base.
In the Star Academy games
In the Star Stable games
The original Star Stable games seem to each take place in different regions of Jorvik, during different seasons.
In Star Stable Online
In Star Stable Online, Jorvik has been expanded upon, and players are not restricted to any one region unless said region is locked or the player is not a star rider, in which case they are restricted to the Moorland and Fort Pinta area.
The Jorvik in Star Stable Online doesn't seem to contain any of the locations or settlements previously featured in its prequels besides Jorvik Stables and Dark Core's Oil Rig (however, both locations seem to have been edited heavily in contrast to their original counterparts).
However, the Jorvik in Star Stable Online vaguely appears like the one featured in the original Star Stable maps, albeit being far more larger.
Jorvik City much more closely resembles the original map from the Starshine Legacy games.
In Star Stable Online, horses are also believed to have close ties to Jorvik, as well as Jorvik gaining its own legend as a backstory (which, later in the game, this legend will make far more sense).