Opera Fatal

Opera Fatal is a 1996 educational graphic adventure puzzle video game developed by Ruske & Pühretmaier Design und Multimedia GmbH and published by Heureka-Klett. The game's plot follows maestro Angelo, the orchestra director, on the night before the premiere of Beethoven's Fidelio. A mysterious thief has stolen the musical scores; to retrieve them, Angelo must solve a series of music-themed riddles that have been scattered throughout the opera house.