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Yume Koujou: Doki Doki Panic
|Yume Koujou: Doki Doki Panic|
This game has a notes page
Originally conceived as a vertical-scrolling Mario game, Yume Koujou: Doki Doki Panic was then tweaked into a story about an Arabian family going into a storybook to rescue two kids who were kidnapped from the real world by Wart.
It was later localized internationally as Super Mario Bros. 2, essentially turning it back into the original concept, which was then released in Japan as Super Mario USA.
There could be some unused graphics other than the smiley face.
Inside the tileset for the desert stages is a little smiley face that isn't used anywhere in this game or the prototype and final versions of Super Mario Bros. 2. It appears to just be a placeholder.
Using early disk copying utilities would create imperfect copies of the disk due to the header field, which says how many files are on the disk, being set to one less than what there actually is, producing this screen when the disk is set to Side B. Alternatively, remove DUMMY-DT from Side B or set the PC to $66A2 before entering a level.