Snowpiercer is a 2013 post-apocalyptic science fiction action film based on the French graphic climate fiction novel Le Transperceneige by Jacques Lob, Benjamin Legrand and Jean-Marc Rochette. The film was directed by Bong Joon-ho and written by Bong and Kelly Masterson. A South Korean-Czech co-production, the film marks Bong's English-language debut; almost 85% of the film's dialogue is in English.