Ensure the software you are using is up-to-date to avoid vulnerabilities related to older archive versions.
of the collection? (e.g., photos, files, game assets) Are you having issues extracting it (e.g., error messages)? With that info, I can suggest the exact tools you need. How To Open, Create, and Convert RAR Files - AVG AntiVirus Casgra_Collection.rar
Since Windows and macOS do not have built-in support for all RAR formats, you should use WinRAR (which offers superior compression) or 7-Zip . Ensure the software you are using is up-to-date