Whenever you deal with archives like NINJALA-NSP.rar from third-party sources, always run a malware scan. Ensure your source is reputable within the community to avoid "brick code" or malicious scripts designed to target CFW users.
If you are running Atmosphere, you can use installers like Tinfoil , DBI , or Awoo Installer . NINJALA-NSP.rar
This means the file is compressed. You will need a tool like WinRAR or 7-Zip to extract the actual game data. Whenever you deal with archives like NINJALA-NSP