Below average movie compared to Korean version - Alive 2020
This and the korean version of the movie are taken from the same script but directed very differently.
The Korean version of this movie - alive 2020 (#Saraitda - original title)
https://moviechat.org/tt10620868/Alive
I would rate that one about 7 but this was just about a 4.5 - the best bits of the korean version are just dumbed down/removed from this and none of the cast are even decent in their roles and the leads guy with his tattoo's just didn't suit the role and was too old looking.
The only decent bit about this movie was the vent use, nothing else was even remotely good about it compared to the korean version.