.
I have been playing that shit in class recently. When I had my SNES hooked up, I beat Metroid quite a few times without a guide, but nowadays, with it running on my computer, it is too easy to search on the internet on how to beat it.
Good shit though.
EDIT: Also get The Legend of Zelda: A Link to the Past. Definitely worth the time and is another classic.
A Link to the Past is one of my favorite classics.
(http://s3.amazonaws.com/kym-assets/photos/images/original/000/138/246/tumblr_lltzgnHi5F1qzib3wo1_400.jpg?1318992465)s