I’ve spent a good hour or so reading the brill History of Lamasoft by the Yak Jeff Minter himself, and then reliving some of his spectrum classics. The great Psychedelia especially.
“I called the program a “light synthesiser”, and advertised it as a new, non-competitive form of entertainment… no enemies, no killing, just light and colour.”
It’s available to run on your modern machines,emulated of course.