Wonderful little game. The whole time I played it, I felt a little uneasy and kept wondering what the "catch" was. Superbly done! I've played it several times since and found three different endings, and I'm sure I've missed a few details here and there along the way.
The environment is a little sparse (though it does include a working toilet, of all things!) Commands are very basic. Unfortunately, I kept running into "Noun error" or "Command not understood" errors doing things that I thought were relatively normal. That was a little bit annoying, but not the end of the world. Once I got a feel for what you could and couldn't do, it was OK.
Absolutely worth playing, and if you do play it, you have to play it again.