Sui generis is a Latin phrase that means "of its own kind", "in a class by itself" -- that phrase sprang to mind regarding this film. Original and unique. Stop motion animation throughout. No dialogue. Fascinating, detailed models. I can only guess how many thousands of hours this took to produce. Some of the background details suggest how much thought went into every aspect of the shots. The story itself is intense and enchanting. Enough to engage adults and probably entertain and/or frighten small children. The wordless characters and their adventures are not a sugar-coated cartoon but a tale full of intrigue, magic and curious explorations. 100% recommended. You have never seen anything like this, and you ought to.