sometimes you can find really cool stuff on the internet archive but most people know it for the wayback machine to look at old and archived websites
collection of manga comics
https://archive.org/details/manga_libraryarcade games playable in the browser
https://archive.org/details/internetarcadeold k-mart store recordings
https://archive.org/details/attentionkmartshoppersold games for ms-dos playable in the browser
https://archive.org/details/softwarelibrary_msdos_gamesmirror of github repos
https://archive.org/details/github_narabot_mirrorold ms-dos malware
https://archive.org/details/malwaremuseum