“FireNES”:http://lifehacker.com/394597/firenes-brings-2000-nes-games-to-your-browser integrates into Firefox and let’s you play over 2,000 old NES games in Firefox.
Or do it in any web browser via “vNES”:http://lifehacker.com/software/gaming/play-your-favorite-nes-games-online-206073.php through Java. Hat tip to “Ludwig”:http://www.theludwigs.com
