If you are unsure of the file's safety, run the contents in a virtual machine or a sandbox environment to prevent potential malware from affecting your main system.
When extracting, look for a readme.txt or install.txt file inside. These often contain specific version info and installation instructions. Actionable Next Steps Monsters_of_the_Sea_3_RUS_ENG_JAP_.rar
This is a compressed archive format. You will need a tool like 7-Zip or WinRAR to open it. If you are unsure of the file's safety,