Death Note (Netflix, 2017)

Netflix's Death Note stands as the most egregious adaptation in this top 10, compressing 37 episodes of intricate cat-and-mouse thrills into a disastrous 100-minute film that earned a 37% critic score on Rotten Tomatoes—27 points below the anime's 100% rating. The movie alienated fans by transforming Light Yagami from a genius antihero into a whiny teenager whose motives collapse under lazy writing, while Near is reduced to a generic detective lacking the original's eccentric brilliance. With a runtime 73% shorter than the source material's first season, it proved that cramming a philosophical thriller into a feature-length format only produces a hollow, cringe-worthy specter of greatness.