The game sold over 60,000 copies.
The game's title in the box is just "Wizard and the Princess". But in the instruction manual and the disk itself one can read the title as "The Wizard and the Princess".
In the game King's Questions (a trivia game played in the world of Daventry, from King's Quest), one of the questions asked is about The Wizard and the Princess (alternate title for Adventure in Serenia):
A lot of adventure game lists incorrectly identify this as Adventures in Serenia (plural). Adventure, singular, is the correct title.
This is the same game as Sierra's "Wizard and the Princess", just a different title. Adventure in Serenia was actually written in 1980 but was not published by IBM until 1982. (There are two copyright dates on the disk label.) It is generally regarded as the first commercial interactive fiction game to incorporate color graphics.
The infamous sierra name of "Avis Durgan" appears in the code for this game as well.