Retro Game Emulator (retro-game-emulator) free WordPress plugin

Adds an NES player on your site via a shortcode [nes] in any post or page. Note that no roms are included with this plugin. You’ll need to upload them yourself on the settings page for them to be available to play.

This plugin implements the jsnes library by bfirsch. https://github.com/bfirsh/jsnes