Expecto Patronum joins the timetable in Harry Potter and the Prisoner of Azkaban, EA's 2004 tie-in to the third book and film. The GameCube version adds that year's spells to another Hogwarts roam, with Dementors on the grounds and Buckbeak's fate in the plot.
Harry, Ron, and Hermione each get stretches of the castle and the forest. The time-turner business of the story shows up as a reason the year cannot be played as a straight line of classes.
The cube roam is the third year's school, patronus and hippogriff included. It is a different spell list from the chamber game that came before it.