A programmer going by the nickname Lumorti has created "Quandoom" - a program that enables you to play the first level of Doom on a quantum computer. Unfortunately, even the most powerful quantum computer to date, created by Atom Computing, equipped with 1,225 qubits, is unable to run it. To launch the project, as many as 70,000 qubits and 80 million logic gates are needed.
It is common knowledge that every usable computing device ever created is capable of running Doom. Despite decades of active research, not a single practical application for quantum computers has been developed yet. This is changing today, with the release of Quandoom, a first-level port of Doom designed for a quantum computer, in the form of a single QASM file, using only 70,000 qubits and 80 million gates. Although such a quantum computer does not yet exist, Quandoom can be effectively simulated on a classical computer, achieving 10-20 frames per second on a laptop, using the included lightweight (150 lines of C++ code) simulator called QASM.
This means that for now, we can only simulate the game running on a quantum computer using the QASM Simulator on regular PC hardware equipped with at least 5 GB of RAM. The game still doesn't run perfectly, as it achieves animations of around 10-20 frames per second.