As an additional information, the Korean movie "#ALIVE" was based on the 2019 script by Matt Naylor, he himself was involved in adaptating his script to the 2020 movie #ALIVE.

His 2019 script was also adapted into a 2020 American movie entitled "Alone" which was released a few months later after the Korean adaptation.

For more information:

• 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)