If you are trying to access the content inside this archive, you cannot open this file by itself. You must follow these steps:
: This indicates the launch version of the game, meaning it lacks subsequent patches, performance fixes, and DLC (like the Ascension update). Returnal v1.0.part03.rar
: You need part01.rar , part02.rar , part03.rar , and every other sequential part in the set. If you are trying to access the content