This is my favorite series. It also offers plenty of replayability in that all problems have multiple solutions and you can play as one of three classes. Later in the series one of the classes can branch into a fourth class. This series combines point-and-click adventure with RPG elements and a sense of humor. This series also includes the unique ability to import/export your character from game to game. If you're interested in this series, I recommend you also check out AGDInteractive and Heroine's Quest.