It’s a form of digital archeology. Opening the file is a gamble; you might find a rare collection of 2000s-era web icons, a defunct forum’s SQL database, or just a thousand copies of the "All Your Base Are Belong To Us" GIF.
Within communities like r/DataHoarder, such files are sometimes shared as "mystery packs." various2.7z
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 a form of digital archeology
You’ll need a utility like 7-Zip (Windows), Keka (macOS), or p7zip (Linux) to peek inside. You’ll need a utility like 7-Zip (Windows), Keka
Large collections are often split into multiple volumes to stay under file-size limits for hosting services. various2.7z would be the second installment of a massive library of oddities. 3. The "Mystery Box" of Data Hoarding