List of Paper Mario pre-release and unused content
This is a list of pre-release and unused content for the game Paper Mario.
Paper Mario was originally going to be named Super Mario RPG 2, but due to complications involving Square, the makers of Super Mario RPG: Legend of the Seven Stars, the name was changed to Mario RPG 64, Super Mario Adventure, and later Mario Story (Paper Mario out of Japan).
In an early interview with Nintendo Power, Shigeru Miyamoto (after being asked about Super Mario RPG 2) said that they wanted the game's graphics to be in the vein of its predecessor, as well as include multiple events and characters that are commonly featured in other Mario games.
The game was originally in development for the failed Nintendo 64DD, but was ultimately released as a cartridge.
Early screenshots of this game showed that Poochy was going to play some sort of role in the game, and another screenshot showed that Nep-Enuts were going to be in this game also (indicating that Lavalava Island was going to be more like Yoshi's Island). Also, the early version of Forever Forest showed that it would be much smaller, with all the forest's trees having sinister faces. A screenshot had also shown a strange early Whale.
Mario has a different look in the early version, having sclerae in his eyes as he does in artwork for other Mario games such as Super Mario Bros. 3, instead of simple black dots in the final.
These unused items were found in the code of Paper Mario. Most of their names and descriptions were never translated officially.
The release version of the game contains some scrapped Badges that can be accessed with a Gameshark or a similar device. These Badges can be found in the game's data and are never seen during the game.
In addition to the above, the following images were found within the game's ROM. Though they have no assigned item, they are likely to be unused item sprites. The key items are on top, badges are in the center, and normal items are on the bottom.
Unused Enemy Palettes
The ROM contains several unused palettes for enemies, including aqua-blue Fuzzies, bright Embers, frosty Goombas and Koopas, and even Crystal King palettes.
Debug rooms are areas in a game that facilitate testing. Some leftover debug rooms were found in the Paper Mario ROM.  As with most debug rooms, they are accessible using an exit modifier gameshark code.
Unused enemy formations
The ROM contains some enemy formations not used in the game.