I don't know if you're being sarcastic because it's hard to find in text, but Super Mario Bros. 2 is this game. This is the Japan version and then in America they released this game as a Super Mario Bros. sequel since Lost Levels wasn't released in America because Nintendo thought it would be too hard for Americans.

Sorry if I sounded like a know-it-all

It's okay, lol. I was being sarcastic.

Ok cool.