Super Mario USA

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Title Screen

Super Mario Bros. 2

游戏名称: Super Mario Bros. 2
别名: Super Mario USA (JP)
基于: Doki Doki Panic (JP)
开发商: Nintendo
发行商: Nintendo
游戏平台: NES
发行于日本: September 16,1992
发行于美国: September 1,1988
发行于欧洲: April 28,1989
发行于澳大利亚: May 22,1989

GraphicsIcon.png 本游戏有未使用的图型.
MusicIcon.png 本游戏有未使用的音乐.
SoundIcon.png 本游戏有未使用的音效.
TextIcon.png 本游戏有未使用的文本.
RegionIcon.png 本游戏有区域差别.
Carts.png 本游戏有版本差别.

ProtoIcon.png 本游戏有工程版页

As most Nintendo fans already know by this point, the game that was released as Super Mario Bros. 2 to the rest of the world was not the same Super Mario Bros. 2 that was released in Japan. Apparently Nintendo thought that the Japanese version of Mario 2 was too similar to the original Super Mario Bros. (being essentially a new set of levels for the first game with a cranked up difficulty), so they took another game they made and modified it to serve as the Mario sequel for the west (saving themselves the trouble of having to renumber Super Mario Bros. 3 when it came to localize that a year later).

Fortunately, Mario 2 was a smash hit, and many characters introduced in this game (Birdo, Shy Guys, Ninjis) were gradually incorporated into the Mario universe. The game was even re-released in Japan with all the changes made for the international version under the title of Super Mario USA.

Unused Graphics

Doki Doki Panic Leftovers

Found among the graphics used in the ending scenes.

Doesn't grant three wishes.

A magic lamp. This became the Potion, and has the same effect (creates a door to Subspace).

Love is in the air!

This heart was the equivalent to the Mushrooms found in Subspace.

So where's the key?Maybe I left it under this block?

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.

Prototype Leftovers

Fifteen dollars? That's it?!

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.

Miscellaneous Graphics

Awwwww isn't he cuuute? ...Actually, it kinda looks familiar.

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

Have you seen us?

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

Doki Doki Panic much, Nintendo?

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

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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.

Unused Text

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.

Revisional Differences


Well, that's not right. *poof!*

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.

Bonus Chance


PRG1 adds an extra NMI wait before drawing the Bonus Chance screen layout. This was done to resolve an issue where the screen fails to render properly on PAL consoles (essentially, an NMI occurs immediately after the pointer to the screen layout data is set, which causes it to be erased before the game can actually do anything with it). Although the US PRG1 was not actually released in PAL territories, it was used as a base for the PAL PRG0.

Regional Differences

Add differences from Doki Doki Panic.
US/Europe Japan
It's a sequel! It's a side story!

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.