After playing this game, I understand why it's held in such high esteem, and has been so for years. The atmosphere and sense of exploration blend perfectly, feeling serene and peaceful one moment and horrific and disorienting the next.
It is a phenomenal example of the idea that anybody can make a game, being made by one person on his lonesome. In fact, this game partially inspired me to make games of my own (coincidentally, with the very program used to make this game: RPGMaker 2003).
I can only hope that the publisher will continue to put up RPGMaker classics, though it may just be wishful thinking to hope that the others will also be free.