My interaction with YouTube is pretty much the search bar at the top. I generally only go to YouTube when there is something specific that I want to watch/listen to: a specific song or video, etc. So there's little reason for me to subscribe to anything.
The game has several different possible endings depending on your choices. The short story of course has only one ending: very depressing one that is the title of the story.
One of the few near perfect adaptations of a short story or novel into a game. Harlan Ellison was notoriously difficult to work with at times, but this one they were able to do a great job.
I remember watching a few episodes of this show as a kid. I specifically remember the episode where they played Dragon's Lair, because given the very short play time the contestants had for the game, there were really only a few possible choices that everyone got correct and so they all had the same score...
However it is primarily a cultural phenomenon, it's simply spread to the rest of the world as part of the US cultural zeitgeist and near-hegemony.