[Chathamization]

Actually, Train was the first thing that came to my mind when typing that comment. The fact that we both immediately thought of the same niche game that apparently has only been played twice without it's creator present suggests that these things aren't terribly common (that's not to say that these edge cases aren't interesting). But maybe a die hard board gamer can correct me, since there tends to be a lot of interesting stuff that goes unnoticed (this is definitely true for video games, I'd be surprised if it wasn't true for other games).

The people who seem to be pushing for games to grow up or talking about Citizen Kane moments (and seemingly forgetting about silent films) seem more interested in validation than anything else. There have been interesting games for decades; if they're truly interested in these, all they have to do is play them.