List of Mario vs. Donkey Kong pre-release and unused content
This is a list of pre-release and unused content for the game Mario vs. Donkey Kong.
Hidden e-Reader levelsEdit
Levels for the game's e-Reader mode, Mario vs. Donkey Kong-e, were designed for both the North American and Japanese version of the game. The e-Reader mode is normally hidden on the file select screen; however, by modifying each version of the game using hacks, the mode can be enabled to reveal a preloaded list of e-Reader levels.
There are a total of 13 level entries in the North American version (also called e World) and 14 in the Japanese version (named Card e-+). For the Japanese levels with released e-Reader cards, the last two digits of the card's ID number denotes its place among the 14 preloaded levels. Because the game was developed by the American division of Nintendo Software Technology Corporation, almost all of the North American levels appear to be prototypes of the levels available in the Japanese release, which came out weeks later. The two versions' levels are in different orders, and all the Japanese levels have been edited to varying degrees. Most of the differences are minor, with a few levels having major differences between regions. Two levels were removed from the Japanese version, while three new ones were added.
Edit
Since no e-Reader cards for the game were released in North America, the e-Reader mode in that region can only be accessed by hacking the game.
 File select screen |
 Level select screen |
 Scanning an e-Reader card |
 Attempting to add a new e-Reader level when all slots are full |
List of levelsEdit
The following levels are numbered by the order in which they appear in the preloaded level list in the Japanese and North American version of the game, respectively. All images are from the unused North American mode, with the exception of the levels exclusive to the Japanese version.
| # (J) |
# (NA) |
Image | Name (Japan) | Name (North America) | Description |
|---|---|---|---|---|---|
| 1 | 12 | 
|
Tobiori chūi! 「とびおりちゅうい！」 "Jump Down with Caution!" |
Climb and Fall |
Difficulty:  A level with a set of Color Switch-activated ladders and platforms on either side, with Fireballs in the center. |
| 2 | 1 | 
|
Revenge 「リベンジ」 |
Revenge | Difficulty: A level that involves using Color Switches to drop Fireballs to the bottom, where they can be defeated with a hammer. |
| 3 | 2 | 
|
Naga~i michinori 「なが～いみちのり」 "The Looong Way" |
The Long Way | Difficulty: A large level that requires navigation to reach the Color Switches on different parts of the map. A 1-Up Mushroom can be found at the bottom of the ropes in the North American version, but it was removed in the Japanese version due to Mario having unlimited lives in e-Reader levels. |
| 4 | 3 | 
|
Athletic 「アスレチック」 |
One Shot Blue | Difficulty: A level that features enemies from Donkey Kong Jungle. |
| 5 | 4 | 
|
Tamago Panic! 「たまごパニック！」 "Egg Panic!" |
Egg Attack | Difficulty: A level where Mario is swarmed by birds dropping eggs. |
| 6 | 5 | 
|
Kamitsuki Wani no su 「かみつきワニのす」 "Snapjaws' Den" |
Later Gator | Difficulty: A level that features Snapjaws. |
| 7 | 6 | 
|
Fumikoete susume! 「ふみこえてすすめ！」 "You Should Cross Over!" |
Hot Feet | Difficulty: A level in Fire Mountain with Fire Shy Guys and Ninjis. This level has a very different layout between the North American and Japanese versions. |
| 8 | 8 | 
|
Dossun no toride 「ドッスンのとりで」 "Thwomp's Fortress" |
The Thwamplet | Difficulty: A level with several Thwomps surrounding the presents. The Japanese version has more space between Thwomps. |
| 9 | 9 | 
|
Rōsoku ni chūi! 「ローソクにちゅうい！」 "Beware of the Candle!" |
A Tricky Candle | Difficulty: A level where a candle must be manipulated. The North American version is missing each of the presents. |
| 10 | 11 | 
|
Dangerous Flowers 「デンジャラスフラワー」 |
Danger Flowers | Difficulty: A level populated by Tane Pakkun, whose seeds must be dodged frequently. The Japanese version replaces most ladders with springs. |
| 11 | N/A | 
|
Laser Panic! 「レーザーパニック！」 |
N/A | Difficulty: A level with lasers that must be dodged using Robo Kikki. |
| 12 | N/A | 
|
Hitasura kawase! 「ひたすらかわせ！」 "Let's Do It!" |
N/A | Difficulty: A level where Mario must climb ropes while avoiding Tane Pakkun, bats, and cannons. |
| 13 | N/A | 
|
Osarete susume! 「おされてすすめ！」 "You Should Shove!" |
N/A | Difficulty: A level built around Sir Shovalots. |
| 14 | 7 | 
|
Teresa wo kawase! 「テレサをかわせ！」 "Let's Move the Boo!" |
Boo in a Box | Difficulty: A level that must be traversed in a clockwise fashion while avoiding the Boo. |
| N/A | 10 | 
|
N/A | Key to the Key | Difficulty: A large and technical level with conveyor belts and Direction Switches. |
| N/A | 13 | 
|
N/A | DUMMY2 | Difficulty: An empty level except for the three presents, the key, and the door. Due to its name, this level was likely intended to test basic functionality for e-Reader levels in the game. |
North American level mapsEdit
 01: "Revenge" |
 02: "The Long Way" |
 03: "One Shot Blue" |
 04: "Egg Attack" |
 05: "Later Gator" |
 06: "Hot Feet" |
 07: "Boo in a Box" |
 08: "The Thwamplet" |
 09: "A Tricky Candle" |
 10: "Key to the Key" |
 11: "Danger Flowers" |
 12: "Climb and Fall" |
 13: "DUMMY2" |
Level editorEdit
An incomplete level editor exists in the game's code, and it can be accessed by hacking. Some elements are broken, and it is not possible to save a created level. A fully realized level editor would later appear as the Construction Zone in Mario vs. Donkey Kong 2: March of the Minis.
- Move cursor (which looks like the current object)
- Switch between different object types
/ 
- Scroll through the objects
- Place an object
- Remove an object
- Play level
