You can read it here.
Judging from the comments, looks like it's a pretty divisive "game". People either love it or hate it. I suspect it has as much to do with when you play it as any merits of the game proper. This is a slow, melancholic game. Play it during an evening you're in a melancholic mood with 2 hours to spare. Playing it any other time is like watching a horror movie in broad daylight.
It's a pity some of the game's detractors quit after ~20-30 minutes; the Caves level of the game (~40 minutes in) has some of the best stalactic/stalagmite graphics I've ever seen. Combined with the lighting effects, it makes for some hauntingly beautiful sights.