Super Mario Bros. 2 (NES)
|Super Mario Bros. 2|
This game has a prototype article
Super Mario Bros. 2, as it's known in the west, is actually a Mario-ified version of a completely unrelated game called Doki Doki Panic. Nintendo decided, for better or for worse, that the real Super Mario Bros. 2 was both too similar to the original Super Mario Bros., and too difficult for western audiences. And so, this game was born.
Doki Doki Panic Leftovers
A few graphics from Doki Doki Panic, the game that was eventually converted into Super Mario Bros. 2 in the west, remain hidden away with the rest of the game's graphics.
A magic lamp. This item would later become the potion, and has the same effect.
This heart was the Doki Doki Panic equivalent to the mushrooms found in subspace.
A lock and a metal platform. These were used in the ending of Doki Doki Panic, and don't have any equivalent graphics/objects in SMB2.
Hidden in the tileset for the desert stages is a little smiley face that isn't used anywhere; not even in the prototype. It appears to just be a placefiller.
These were used in the ending of the prototype. Instead of a display showing how many times each character was used, you received "prize money" based on how few times you died.
Eighth animation frame
The animated tiles in the game (like the POW blocks and the cherries) actually have eight frames of animation. However, due to a bug, only the first seven frames are actually displayed.