It's an unofficial fan made project, but oh my god it's the tits! You play SMB, but it's got all these quality of life improvements.
Like the background and clouds aren't static like they would be in the NES. There's options to backtrack. You can change the clock to unlimited, or change the seconds to real seconds. You can change how damage is done. American style, or Japanese style.
They included Super Mario Bros Special. Which is a rare 1986 Super Mario game, which was released by Hudson Soft. In the 1986 version the screens did not scroll with you. Instead you move forward, and the screen transitions. Well this game takes those levels, and lets you play them in the original SMB engine, with SMB graphics.
They included a mode from SMB DX where you had to hunt for 5 red coins, a yoshi egg, and get a certain score.
They included a boo race mode.
And Super Mario Bros 2 (Japan)
I don't even know what All Night Nippon Super Mario Bros is.
They included resource packs, which change the graphics. They have a stage builder. You can share or download others custom levels.
It has achievements.
Guys, this game is the real deal.
In the American release of the game if you're fire mario, and you take damage you turn into big mario. If you take damage again, you become small mario.
In the Japanese version if you're fire mario and you take damage, you instantly become small mario.
Nah, my American Duck Hunt/SMB Cart turns you right into small Mario.
My pre duck hunt cart is the same. If you are hit when fire Mario, you go small
huh, that's so odd. i have no recollection of that difference from childhood, and my ROMs don't do that either, neither in the original nor in All-Stars.
they all perform the "Japanese" way
Yeah, that's what I remember too, at least for the original SMB. I think OP is either misremembering or haven't really played the original.
SMB3 did have that though.
Which damage version is implemented in the European version? My memory says Japanese-style for SMB1 and American-style for SMB3 - but given I had no idea there were regional differences, I may be totally wrong. Back then, Europe mostly got a version of the American version a considerable time later than the rest of the world so I guess it doesn’t really make sense the way I remember it 😅