Retrosonik is primitive and looks like it was abandoned years ago, some of the links are busted and there isn’t any information in Whois except the name James Phillips. I must say, his projects are amazing, what little we can see of them. (Although his spelling is awful.)
Then we have this thing, made of an old SN76477 noisemaker chip.
An experimental analog video synth–very rare to see anyone doing this today.
(Doing it with a VGA monitor simplifies the electronics, because
you don’t have to worry about recombining sync and chroma signals.)
Finally, this defies explanation……