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Super Mario Bros. 2 (NES)
|Super Mario Bros. 2|
Also known as: Super Mario USA (JP)
This game has a prototype article
As most Nintendo fans already know, the international version of Super Mario Bros. 2 is actually a graphically modified version of the Nintendo/Fuji TV collaboration Doki Doki Panic. Apparently, Nintendo thought the Japanese Super Mario Bros. 2 was both too similar to Super Mario Bros. and too difficult for overseas players to handle.
Fortunately, Mario 2 was a smash hit, and many characters introduced in this game were quickly adopted into the Mario universe. The game was even re-released in Japan with all the changes made for the international market under the title of Super Mario USA.
Doki Doki Panic Leftovers
Found among the graphics used in the ending scenes.
A magic lamp. This became the Potion, and has the same effect (creates a door to Subspace).
This heart was the equivalent to the Mushrooms found in Subspace.
A lock and a metal platform. These were used in the ending of Doki Doki Panic (it's where Wart held the two children he kidnapped in the prologue), and don't have any equivalent in Super Mario Bros. 2.
Yes, money. This was used in the ending of the prototype where, instead of a display showing how many times each character was used, you received "prize money" based on the number of times you died.
Hidden in the tileset for the desert stages is a little smiley face that isn't used anywhere in the prototype, final, or Doki Doki Panic. It appears to just be a placeholder.
Eighth Animation Frame
The animated tiles, such as the POW Blocks and Cherries, actually have eight frames of animation. However, due to a bug, only the first seven frames are actually displayed. To fix this and cycle through all eight frames, set $FAF5 ($1FB05 in the ROM) to $28, or use Game Genie code AXNYSZTX. Note that the graphics for the top of the waterfall, the POW block, the slower quicksand, and Albatoss are unique to this missing frame.
Book Border Tiles
The between-level and pause screens in Doki Doki Panic are two screens wide and resemble an open book, keeping in line with the game's story. In Super Mario Bros. 2, these were shrunk to one screen and the book theme was (mostly) removed; however, the extra tiles can still be found in the CHR data.
Unused Death Sound
Upload an OGG.
The game is programmed to play a DPCM sample when the player dies (a recording of the sound heard in Doki Doki Panic, in fact). However, due to the fact that the sound engine silences DPCM samples on music track changes, the sound does not actually play.
Full Subspace Music
The music track used in Subspace is actually a bit longer than what you can normally hear. Under normal circumstances, the game boots you out of Subspace after about seven seconds, which prevents you from hearing the full 14-second loop. The easiest way to hear it in-game is to pick up a Starman, enter Subspace, and then exit just before the invincibility wears off; if done correctly, the Subspace music will continue to play until the next track change.
To hear the full song at the title screen, use Game Genie code KEOOXXSE.
The string "ZELDA" is present at ROM address 0x1FFFB. It appears that Nintendo copied the PRG footer/vector table from The Legend of Zelda (another FDS-to-NES conversion) and simply forgot to change the title.
Normally, hitting a mini-Fryguy with a Mushroom Block will cause it to disappear in a puff of smoke. In the original release, however, if you manage to hit one while your character is shrinking, it will flip upside-down and fall off the screen instead.
This somehow confuses the game into thinking there are mini-Fryguys left even after the rest are extinguished, and hence the exit will never appear. This game-breaking bug was fixed in the PRG1 revision.
Add differences from Doki Doki Panic.
Nintendo made the somewhat odd decision to release Super Mario Bros. 2 in Japan more than four years after the US release, under the title Super Mario USA (due to the Japanese Super Mario Bros. 2 being a completely different game, released later in the US as The Lost Levels as part of Super Mario All-Stars). Aside from the modified title screen, it is identical to the US PRG1 version.