1. Setting:
- The play's setting is limited to the Rue de Richelieu, while the novel features various locations across France.
2. Characters:
- The play reduces the number of characters. For instance, the character of Jammes, the chief of the Sûreté, is omitted from the play.
- The relationship between Raoul and Christine is given more focus in the play.
3. Plot Structure:
- The play condenses the novel's plot and omits certain subplots.
- The play omits the investigation into the identity of the Phantom and focuses on the romance between Christine and Raoul.
4. Tone and Atmosphere:
- The play amplifies the melodramatic elements of the novel, emphasizing the dramatic tension and conflict.
- The play's atmosphere is more operatic and theatrical, with an increased emphasis on music, visual spectacle, and emotional intensity.
5. Ending:
- The ending of the play deviates from the novel. In the play, Christine falls into the Seine River and Raoul believes her to be dead. In the novel, Erik (the Phantom) rescues her and takes her to his lair, setting the stage for further events.
6. Characterization of the Phantom:
- In the play, the Phantom is portrayed as more of a tragic and pitiable figure, with his motivations driven by his love for Christine.
- The play provides a more nuanced exploration of the Phantom's emotions and inner struggles.
Overall, the play "The Phantom of the Opera" by Gaston Leroux differs from the novel in terms of setting, plot structure, character development, tone, and atmosphere, while still retaining the core themes and elements of the original story.