I don't see many people saying they have beaten Metroid. I've done it once but I never got the ending that everyone wants (no spoilers here but you know what I mean).
Lol just posted there. I'm pretty ashamed to admit that I have never even got past the first part of it. I'm going to hit Google when I get home and finally get more than 3 minutes in to it.
It's one of those games that has always been talked about among us Nintendonians but for some reason it's never crossed my paths.
Not beaten, no. I did get quite far in though but as I never beat it, I'm not sure exactly how far; it was years ago. I might see if I can get a copy somewhere.