There are effects of game direction that I've never seen before. At one point, you are given a lantern and told to light the way down a dark corridor. The standard Myst interface of moving and looking turns into hallucinations, claustrophobic close-ups, shots of wavering focus, moments of staring at your own stained hand. One can only hope that other directors of interactive games take notice. The art is quite satisfactory.
Backgrounds are computer-rendered, in a somewhat simplistic style.
The characters of the story are more interesting. Stop-motion animation, effectively. Certain scenes, particularly dream transitions and the non-interactive readings, are done in variant styles. The authors aren't afraid to change their techniques to suit the scene. That's definitely a good thing.