Come into this game expecting a novella rather than a quick text romp. If you don't read at 600 words per minute like I do, it may take you multiple afternoons or a whole evening dedicated solely to reading this piece.
It's totally worth it, though. The prose is varied and the concept is ingenious and immersive. There is some disturbing material - warning for a graphic description of suicide, among other subjects like murder and abuse and violence - but the story is grand.
One thing I enjoyed was how little I choice I had until the very end, making the final choice (no spoilers!) even more difficult. I was very torn.
Great game/story/novella/whatever-this-is!