Based on the 2019 script by Matt Naylor, this Korean live-action version was a good adaptation. There were some scenes which were far too similar with another Western apocalyptic film released a few years ago (I can not recall the title) in this version that is not in the American version.

If you want to watch the American version based on the same 2019 script by Matt Naylor, look for the movie entitled "Alone" (2020).

* American version based on the same script: https://en.wikipedia.org/wiki/Alone_(2020_horror_film)
* Korean version based on the same script: https://en.wikipedia.org/wiki/Alive_(2020_film)