From the back of the book: The music begins, the curtain rises, and your troubles have only just begun. Welcome to the Royal Grand Opera House, where glamour is for the weak, and breaking your leg will be the least of your problems. Opera House is a standalone tabletop roleplaying game that allows you to take part in theatrical adventures as cast or crew. It offers campaign play and options for a real-time single night session. The book also functions as a sourcebook for theatre, detailing how performances are created and run from auditions to the final night.