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.

Some items can be carried by Angelo to be used to solve a puzzle elsewhere in the opera house.

The primary goal is to find the numbered questions left by the thief and to write down the correct answers in a book in the office.