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I don’t think that means anything though. Doom the game is not a Turing complete programming language. You could write doom in the underlying C and then have it run on a screen in game but that still wouldn’t be doom running doom.

In fact now I’ve confused myself, what would constitute doom running doom?

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You have!

I think what is being discovered right now is whether DOOM itself is Turing complete, and if so, can you program DOOM inside of DOOM by making a computer inside of DOOM composed of DOOM monsters and map features that, when ran, recognizably played DOOM.

Sum up: creating a computer inside the game of DOOM and programming that computer to itself play DOOM would constitute DOOM running DOOM

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