Cuphead is a strange and stunning video game (see the trailer below) that perfectly resembles a pre-war Grim Natwick cartoon. But seeing it in black and white on an old cathode ray tube (above) takes it to another level entirely.
Running a new console to an old monochrome TV requires a serious chain of dongles. First the composite > HDMI adapter you know you need, but then an coax > composite RF modulator because these things are so old they don't even have composite inputs, then maybe a twin-lead flat antenna plugs > coax transformer as well, because these things are so old they don't even have coax.
P.S. black and white and technicolor filters are both available as in-game options, but you've got to beat it, and it's a very difficult game: