SO MUCH FUN!!! (click on the link and you'll be able to find other games there, too)
I remember having a Snoopy game on a Nintendo, as well. The bad thing about this type of game was that you couldn't really save anything, so after you reached such high levels, if you died, then you had to start ALL over again from the beginning he he he he...I also seem to remember some kind of cowboy shooting game that was really fun belonging to my cousin. I think the Octopus game also belonged to a cousin of mine.
What kind of portable Nintendo games did you play in your childhood (if any)?