I just randomly found this on pouet. It appeals to my sense of minimalism!
https://www.pouet.net/prod.php?which=88709
https://www.youtube.com/watch?v=NAaaZGZsEFc
Oh, my bad. I just realised it was here:
https://www.cpcwiki.eu/forum/demos/new-demo-by-bsc-and-rexbeng/msg200574
I searched for it by name, and then thought it weird it wasn't on the forum already as both BSC and rexbeng are active here and searched again!
Anyway, I still love it!