Archive.org has an awesome little project page that provides easy using emulation for some great old video game consoles in the comfort of your modern browser. The emulation is lacking sound at the moment, but this is a great way to play these games from yesteryear without having to install and run clunky old emulators locally. Check it out!
The Console Living Room
The Internet Archive Console Living Room harkens back to the revolution of the change in the hearth of the home, when the fireplace and later television were transformed by gaming consoles into a center of videogame entertainment. Connected via strange adapters and relying on the television's speaker to put out beeps and boops, these games were resplendent with simple graphics and simpler rules.
The home console market is credited with slowly shifting attention from the arcade craze of the early 1980s and causing arcades to shrink in popularity, leaving a small percentage of what once were many.
Through use of the JSMESS emulator system, which allows direct access to these programs in your browser with no additional plugins or settings, these games can be enjoyed again. Simply click on the screenshot or "Emulate This" button for each individual cartridge, and on modern browsers the games will just start to run. As nostalgia, a teaching tool, or just plain fun, you'll find hundreds of the games that started a billion-dollar industry.