The .7z format uses high-ratio compression and is often used to bundle large amounts of media or data into a single file for easier distribution.
The first version, , was bundled as a set of executable files and a handful of media assets. It was distributed on CD‑ROMs that could be purchased in local computer shops. By the time SET 009 rolled out—a later iteration that added new mini‑games, a revamped UI, and a couple of hidden “easter eggs”—the series had cultivated a modest, but enthusiastic, fan base. ALA Melissa SET 009 No Password 7z