It's another one of his experimental story-telling games, which are my favorite. I played the game about ten minutes after it was released and about an hour after that I was writing up a long analysis of it.
I was thinking of posting it here, on my blog, but instead I decided to put it on the intfiction.org Interactive Fiction forums, because I'd rather have a conversation about the game than try to assert things about it in an exposition on my blog. Still, it's a rather wankery academic post, but my intentions are good.
(By the way, intfiction.org is having some problems with spam lately; try to be careful and don't click on any dodgy-looking topics, since they may contain rather explicit porn spam).