FireNes is a Firefox extension that lets you play all those ancient Nintendo games via your browser without having to install any emulators or ROMs. Clever, no? It’s actually loading a Java emulator in the background via the browser, and you won’t be able to save games as yet, but if you’re a Mario fanatic this one’s probably for you.
FireNes is an extension for Firefox that allows us to play around 2500 Nintendo games, without the need to download anything or emulator or roms.
how do you save