Wait, .cpk files are used on different platforms. For instance, the PlayStation Vita uses .pkg and .cpk files for data packaging, while in PC games, it's more Garry's Mod or others. So, the CPK file explorer might vary depending on the context. The user might not know that, so I should clarify.

Hmm, but when I look up online, there are various CPK tools like CPKTool or others. However, I need to verify if these are still relevant or if there are newer versions. Also, some tools might be platform-specific. For example, on PC versus consoles.

Also, consider including warnings about the potential for viruses or malware when downloading tools from unofficial sources. Advise the user to research and download from reputable sites or official sources if available.