I watched the full play through on YouTube, and I found it extremely interesting. There are so many levels of awareness, so many narrative frames, it's quite difficult to try to get a complete understanding of it. It's like every other video game is a stage actor who never looks at the crowd, and just recites his lines, whereas TSP looks the audience right in the eye and questions its own existence, and the fact that he's on stage in the first place. Really impressive. And the writing is great too.