Before diving into the ROMs, it is crucial to understand the host. The Internet Archive (archive.org) is a San Francisco-based non-profit digital library founded by Brewster Kahle in 1996. Its mission is to provide "universal access to all knowledge."
The Internet Archive operates under DMCA (Digital Millennium Copyright Act) safe harbor provisions. They respond to takedown notices. If Nintendo or Sony sends a legal request to remove a ROM, The Internet Archive complies. the internet archive roms free