A somewhat questionable Firefox addition, FireNes promises to deliver you more than 2,500 Nintendo games in your browser. After doing some research, it appears this addon is fetching games from another online Java powered NES emulator. Controls are limited to arrow keys, Enter, Ctrl, Z and X – but hey what do you expect?
They are just Nintendo games after all.
Enjoy it while it last, cause I am sure it may not last for long. Ohh and when Mario and the Mushroom Kingdom police come knocking at your door don’t say I didn’t warn you!