Like a rainbow from sunlight, Doom is always already there once you set up a few nand gates.
all you have to do, according to the readme, is implement five functions in the linked project to get doom on your chosen platform.
True color just means you're not indexing your colors with a pallete. Aka, RGB 32 bit. So surely this isn't true?
I still think it's cool to display Doom in unusual places, but I do agree with you that it's technically different than *playing* Doom in unusual places.
/s