The vast halls of the Internet Archive are a place to explore for old magazines, web pages and even arcade games. Their Internet Arcade features over 900 arcade games released from the 1970s to the 1990s in emulator format, and you can play them absolutely free. Operated by Jason Scott, the list of games includes Astro Fighter, Return of the Jedi, Pac-Man Plus, Q*bert, and so many more.
The site states:
“Most games are playable in some form, although some are useful more for verification of behavior or programming due to the intensity and requirements of their systems.”
So long productivity!