The Internet Archive has made available games from retro video game consoles, such as Atari 2600, Sega Master System, and Magnavox Odyssey- the first home console system.
You can click on one of the consoles to see the games that have been emulated for playing in most browsers:
I actually hate playing retro games, I find them to be tedious and not fun at all. However, I think it's great that the software is being emulated & preserved for historical purposes.
My first video game system was the Atari 2600. Even when I was a child, I knew that this was primitive technology and was slightly frustrated by its limitations.
Atari 2600 Console & Pac-Man