FEARS OF THE DARK is a good animated French art film about fear. But don't expect a horror film, that's not what it is. It's a cerebral art film, mostly black and white animation. Although the styles change, it's mostly black and white with little greyscale. I'm a little surprised that the film did not receive better reviews. Much of the animation is quite beautiful.
But I think expectation is part of it. When people hear animation, they think 3D, not to mention color. When they hear "fear," they think horror. When they see a foreign film, and an art film, they freak out. Especially when it's French.
I'd recommend the film to fans of animation, foreign films, and art films. Just don't go into it with the wrong expectations.