If a link has 'No-Intro' or 'Redump' in the name, it is a collection of the currently best-available ROMs for the system.
No-Intro and Redump are groups that catalog hashes of dumped games for different systems.
To download locked items, register an account. When accessing the file directly, the following error is shown instead. This is shown with a lock icon beside the file name in the item's file listing. Internet Archive restricts items that generate a high amount of traffic from being able to be downloaded without an account to prevent abuse.
