GameShark users found several text references to a level called "Citadel" in the game. Rare explained its nature, and joked about players' speculation that multiplayer-mode Bond characters could be seen in the single-player game: "'Citadel' was a very rough test level designed during the early stages of multiplayer mode. It is not in the finished game in any shape or form, and Oddjob and Mayday would not be in it if it was."
It was thought that a few textual references were all that remained of the level. In 2004, GoldenEye 007 fan sites uncovered an unplayable but viewable single-player version of the level (with implemented sky and water textures).
In 2005, the website GoldenEye Forever revealed that it was possible to access a fully playable multiplayer version by linking a GameShark to a computer. The codes to access Citadel in its fullest state totaled nearly 10,000 lines. The test map is largely a mass of shapes and ramps that the players can climb upon, thus giving players many opportunities for sniping and for hiding.All Bonds
Before GoldenEye 007 was released, Rare had placed a feature in the multiplayer mode of the game, known as the "All Bonds" option. This would allow players to choose four of the five actors (at the time of the game) who had portrayed Bond in various films; Sean Connery, Roger Moore, Timothy Dalton and Pierce Brosnan. George Lazenby was not included. However, before the game was released, Rare removed the feature for unexplained reasons. It is assumed that Rare had every intention to release the game with the feature, but was later forced to remove it (possibly due to legal problems with EON Productions, Danjaq, LLC, or the other Bond actors themselves). In response, Rare said "Yes, it was the hope of the team that [all Bonds] would be available to play, but for various reasons they weren't."
In addition, the actors' portraits were at one point used to illustrate the four single-player save file dossiers; this was also removed, with Pierce Brosnan's portrait appearing on all four in the final version.
Not all remnants of the All Bonds feature were completely removed from the GoldenEye software. One major clue was the fact that the portraits of the four Bonds in the selection screen for multiplayer mode were accessible by using a GameShark. Also, various screenshots in the game manual, such as one from the multiplayer selection screen, show traces of the former Bond portraits. The follow-up game, Perfect Dark, also contains traces of the All Bonds cheat — there are four tuxedo characters available in multiplayer, corresponding to the four suits seen in the Beta version screenshots, which were used in Perfect Dark for the "Dinner Jacket" characters. The James Bond head used in the Aztec and Egyptian bonus levels of GoldenEye 007 is not the same as the one from the standard missions.
The feature was brought to the attention of many gamers when the gaming magazine Electronic Gaming Monthly published an April issue with what they called the "All Bonds Cheat", using some fake screenshots "to support" its claim. The magazine reported that to unlock the option in the cheat menu, a player must complete the Aztec mission on 007 difficulty in less than nine minutes with all customisable enemy settings on the highest difficulty. The claim was later found to be an April Fools prank, which the magazine held annually.
In 2005, a program called the GoldenEye ROM Editor was released by The Rare Witch Project. The coders SubDrag and Ice Mario cracked the compression format of the images used by the game, allowing any image in the game's memory to be viewed and edited, by opening up a ROM image of the game. It was then discovered that the All Bonds faces and suits are still in the game; Rare had only removed the ability to use them. By mapping them onto other multiplayer characters' faces and bodies, one can try to recreate All Bonds, although since the body and head shapes do not match the textures, it will not look as it was intended.