First of all, it takes guts on the part of the filmmakers to make a commercial movie about people turning into giant mushrooms. It's all a big modern morality fable. Once the characters get to the island, we the audience are sucked into a horrific world of constant rain where the only food that grows is fungus. The characters try to resist but most eventually give in to the temptation. This film is very creepy and maintains an atmosphere of dread. Even the final evolution of the mushroom people is convincing enough to keep you wrapped up in it. It starts off slow but give it a chance. It's a beautifully made and memorable little masterpiece of horror that rightfully seems to have been born of nightmares. It's too bad that even in our supposedly enlightened, politically tolerant world that there is no American distributor for the uncut Japanese version of this film. This film is hard to locate but well worth the effort. I even saw the American International Pictures version that is badly dubbed and it is still a powerful and original film. See it at all costs if you are a fan of Japanese horror films.