"Creature features have an unrivaled ability to straddle genres, often combining the best of thrills and frights, science fiction, and black comedy, sometimes inadvertently. Some succeed better than others. Weak scripts, shoddy effects, and monsters who don't deliver on scares are all components that separate the best monster movies from the other guys. Luckily, with the right combination of cheesy dialogue and wonky technical effects, you can accidentally stumble upon some of the best the genre offers. A shark hellbent on revenge? Check. Deadly slugs? Yeah, I guess. Murder turtles? Okay, sure. Often, the more ridiculous the logline, the bigger the payoff. Bad shark movies are still being made, unable to understand how "Jaws" did it. Today, we're doing a deep dive into the 18 most underrated monster movies you need to see because bad creature features deserve some love, too!" - slashfilm.com