It looks like a social commentary like soooo many other movies these days, including Parasite.
@AnusFace AKA Mr. Wonderful.
Runaway Train (1985) was my favorite train movie until I saw Snowpiercer.
@PolkaDot .
I had to start watching films from other countries. I am so bored with Hollywood movies and actors with their social commentary. 10 minutes in and I could guess the ending. However, with films from Asia, I have no idea what is going to happen.
Somehow, I found this director, Bong Joon Ho. He combines comedy with horror. Who writes a story with dark humor with sudden mood shifts and death? Bong Joon-ho often works the same actors like Kang-ho Song (Parasite, Snowpiercer and The Host)
Another train movie -Train to Busan (2016) a good drama/zombie movie.