It is a well-known fact that all useful computational devices ever created are capable of running DOOM. Despite decades of active research, there is yet to be developed a single practical use for quantum computers. This changes today, with the release of Quandoom, a port of the first level of DOOM designed for a quantum computer, given as a single QASM file, using a mere 70,000 qubits and 80 million gates. Although such a quantum computer doesn’t exist right now, Quandoom is efficiently simulatable on a classical computer, capable of running at 10-20 fps on my laptop using the accompanying lightweight (150 lines of C++) QASM simulator.