Cross Save-Data Rewards

Not to be confused with Stop N' Swop, a scrapped mechanic originally intended for the Banjo-Kazooie and Banjo-Tooie games that have been discovered to have some functionality in Super Mario 64 due to the Personalization A.I.

Cross Save-Data Rewards is the name given to an anomalous system used to reward players for playing other Nintendo 64 games by rewarding the player with special rewards from Personalization A.I. in Super Mario 64 by detecting save data from other Nintendo 64 cartridges. This system utilizes the Controller Pak peripheral to detect save data from other games. The actual rewards vary greatly, from new levels to entire new playable characters.

Description
Cross Save-Data Rewards are very varied, making them hard to generalize, though some constants typically appear. Cross Save-Data Rewards typically don't manifest the moment the Controller Pak is input, instead requiring the player to somehow access some menu where the game would detect the Controller Pak and implement the Cross Save-Data Rewards. Notably, this appears to spontaneously create the rewards instead of pulling already made unused assets for the system when it was initially planned.

A lot of reports claim that an anomalous part of Princess Peach's Castle appears to house Cross Save-Data Rewards, nicknamed the "Rewards Hall" by those who have encountered it. The Rewards Hall has been described as a long hall with a yellow and green color palette with several doors that lead to the unlocked Cross Save-Data Rewards.

Documented Rewards
''This is a list of some of the most commonly documented Cross Save-Data Rewards. Note that these may change depending on the player's copy or game used due to how the A.I. appears to spontaneously generate Cross Save-Data Rewards. However, this has been disputed due to how common some Cross Save-Data Rewards are.''

The 4 most common types of Cross Save-Data Rewards are:


 * A level based on some of the main areas or theme of the game used for the Cross Save-Data Reward.
 * Playable versions of the main characters of the game used for the Cross Save-Data Reward.
 * A Power Star or other major collectible no matter how what game is used for the Cross Save-Data Reward.
 * A general gameplay change to the game somehow based on the game used for the Cross Save-Data Reward. This is the rarest of the 4 main types of Cross Save-Data Rewards.

Some more specialized Cross Save-Data Rewards are:


 * A dungeon or temple level when Legend of Zelda: Ocarina of Time or Legend of Zelda: Majora's Mask are used.
 * Some form of car or vehicle when using Mario Kart 64 or Diddy Kong Racing.
 * Companions, despite being a standalone anomaly, appear to potentially be spawned by using Paper Mario or a Pokemon game for Cross Save-Data Rewards.
 * Characters from the Super Mario Bros. franchise manifesting into the game when using any Mario Bros. game that has a character that isn't in Super Mario 64.
 * Egg collectibles appearing in the game when using Banjo-Kazooie or Banjo-Tooie, seemingly referencing the eggs used with the scrapped Stop N' Swop feature.
 * More bombs, Bob-ombs, or anomalous bomb-related objects and/or entities appearing when using Bomberman 64.
 * Any character from Super Smash Bros. becoming playable when using Super Smash Bros. for Cross Save-Data Rewards.

Theorizing
It is believed that Cross Save-Data Rewards were initially planned when the Nintendo 64 BIOS (shown off by Super Mario 64 Beta Archive) was being created, which appeared to save data onto the Nintendo 64 instead of being cartridge specific, as well as show data from the Controller Pak. When this was also scrapped, it is believed that Cross Save-Data Rewards were scrapped alongside them until reimplemented by the Personalization A.I.