Summary: Both Duck Hunt and SMB are great games that still hold up well today, but this cartridge is the most common NES game by far, and incredibly easy to find cheap in person. It's not worth paying over 5 bucks (counting shipping) for a game you can find at nearly any yard sale with old Nintendo stuff for a dollar or less, no shipping costs or waiting. This is a cornerstone of any NES collection, but not worth overpaying for.
Summary: In my opinion, SMB is not the greatest NES game ever, Legend of Zelda is the best ever. Don't get me wrong, SMB is a great game, but not as awesome as LOZ. All i hear is SMB is a great game, it is a great game but not that great. It's an over-rated game, I know people out there will think I'm crazy, but it's just my opinion. There 's people out there who agree with me as well.