The collection above is not of a single series.  Those are multiple series that take place in the same world, which is also part of the Dungeons & Dragons games.  Each series can stand alone, but connects through a world that grows with every installment.  Some show the Forgotten Realms to its core while others are more local.  So, how easy is it to do something of this scale?

First of all, I’ll say it’s much easier to do this with movies/comics (Marvel) and TV shows (Star Trek, Law & Order).  Novels on the other hand are a more challenging medium, especially if it’s one author going alone.  You have multiple authors in the collection above, which means each one works off the same world notes and adds their own touch.  This can still be risky because you could undo another author’s work or step on the feet of a…