And actually, more likely to please, Internet Arcade. Shed loads of arcade games you can play in your browser.
https://archive.org/details/internetarcade
Commodore 64 emulator
https://c64emulator.111mb.de/index.php?site=pp_javascript&lang=en&group=c64
Needs roms that you can get here
http://www.c64.com/
For school memories, this BBC emulator lets you pick games from the archive (Tick autoboot and the game will just start)...