Hot on the heels of my pitfall and pacman remakes, I present you my work in progress space invaders
you can play it online here:
http://js.mikedx.co.uk/invadersa2600.html
I've tried hard to make this as faithful as possible. The saucer code, invisible invaders and moving shields code is already in, but not activated / selectable yet.
use cursors to move, space to fire.
The code is on github for those interested.
https://github.com/MikeDX/div-spaceinvaders2600
Enjoy, and please as usual give me all the feedback you can