"Slugs is a bit of a forgotten gem in the subgenre of nature-attacks horror, and that's a shame because it's actually good, gory fun. Spanish director Juan Piquer Simón (aka JP Simon) makes a solid-looking film on a budget and as with his earlier classic, Pieces, he never shies away from gratuitous entertainment in the form of gross practical effects and exposed flesh. Slugs lacks the wit of Pieces, but it still manages to succeed on gore and action alone." - Rob Hunter, Film School Rejects