While there's a few EmuDevs around, and I apologize beforehand for the shameless topic hijacking, a friend and I have been thinking of making a sort of educational game that teaches you the basics of coding an NES emulator from scratch to game-playable, with progressive challenges, in JavaScript (to make it more accessible).

Is this something you'd be interested in? It's a fun project for us but while we're at it I'd like to know if anyone'd want to play it.