I just came across this movie on youtube:https://www.youtube.com/watch?v=CnPOQr1pxY8
It's about the creator of Dragon's Lair, then "the real" creator of dragon's lair and his idea of a sort of virtual world with a laser disc "console".
The game he created? Thayer's quest. Which in some ways is stupidly hardcore. But in a simple stupid way.
It's a very interesting watch. He didn't really create a virtual world but I think his heart was in the right place. Oh, and there's a bit on Stonehenge at the start which sort of relates to the video.