: The format is part of the 7-Zip project , which is free and open-source software.

: The Unarchiver is a common choice for opening almost any archive format. : The format is part of the 7-Zip

If you are looking for information on this file format or how to handle it, here is a quick breakdown: What is a .7z file? but PeaZip is a popular

: 7-Zip is the standard, but PeaZip is a popular, feature-rich alternative. a specific gaming forum

Where did you see this ? (e.g., a specific gaming forum, Discord, or GitHub?) 7z" or trying to fix an error opening it?