Various2.7z -

LZMA/LZMA2 compression , which offers a much higher compression ratio than standard ZIP.

Within communities like r/DataHoarder, such files are sometimes shared as "mystery packs."

You’ll need a utility like 7-Zip (Windows), Keka (macOS), or p7zip (Linux) to peek inside. various2.7z

If you are looking at this file on your hard drive, here is what the extension tells you:

For most users, various2.7z is the sequel to a previous cleanup effort. It’s the digital equivalent of a cardboard box in the attic labeled "Misc." It typically contains: for hardware you no longer own. Unsorted downloads from a specific era (circa 2010–2015). LZMA/LZMA2 compression , which offers a much higher

Because the name is so non-descript, it is occasionally used by bad actors to disguise malware. If you found this on a random drive or a shady forum, it’s the ultimate "proceed with caution" file. Technical Summary

In the world of retro gaming and emulation, "various" archives are frequently found on sites like the Internet Archive or old FTP mirrors. It’s the digital equivalent of a cardboard box

These often house "non-good" sets—files that didn't fit into a standard regional release (US/EU/JP), such as fan translations, hacked versions, or prototype ROMs for systems like the NES, SNES, or MAME.