Tom7 made a similar one in Tetris as part of the above video
That man baffles me.
He spent 16 years running every street in Philadelphia, starting and ending from home.
It's worth noting that this is a network reincarnation of the old tried-and-true delay-line memory.
https://en.wikipedia.org/wiki/Delay-line_memory
Tom7 made a similar one in Tetris as part of the above video