Pipes to Another World

Pipes to Another World refer to three pipes that can be found in the courtyard of Princess Peach's Castle in Super Mario 64: OS Edition. These pipes take Mario to separate hub areas where Mario can go to courses/hub areas based on games and other memorabilia in the Mario franchise, official or otherwise. The three pipes are known as the Pipes to the Past, Future, and Trash. These pipes are named after the date of the media being either before or after Super Mario 64's release date (courses in Pipes to the Past and Future change place based on the region of the player), and if said media are official or bootleg.

The Pipe to the Past can send Mario to places based on official Mario media that is before Super Mario 64's release date, while the Pipe to the Future sends him to places based on future Mario media. The Pipe to the Trash can send Mario to places that are based on bootleg, unofficial Mario media. The colors of the pipes are green, grey, and brown respectively. Obscure parts of Mario media are also included in the pipes, being fitted into certain pipes based on the previously mentioned criteria.

The courses in the pipes contain new objects, items, enemies, and the like pertaining to the media said courses are based on. Along with this, there have been anomalies pertaining to said courses themselves that are unique to the pipes' contents.

Speculation
Considering that the Personalisation A.I in MariOS 64 can access the internet, it could be possible that the pipes were made due to the A.I pulling information from many websites containing documentation of content from many parts of Mario media, along with possible ROMs to base stuff off of. This information could've been used as a blueprint for the areas in the pipes; using said information to generate new content and objects in the game for the player to play. The A.I itself would probably not predict the future or anything, nor would Nintendo allow any reference to Mario media that hasn't been approved by the company. Along with these factors, it could explain why there would be content that was scrapped from media being reused in the courses.

Bootleg games, bootleg merchandise along with other unofficial content being used for one of the pipe's contents is surprising to what the A.I could do, considering that it was supposed to be an official Nintendo product. It could be theorized that due to the recent phenomenon of bootleg media being popular, the A.I had pulled stuff from bootlegs in order to attract players in some way. It is commonly theorized that the A.Is for Super Mario 64 and MariOS 64 personalize their games/system to cater to the players who play them, so it could be possible that the A.I for MariOS 64 built stuff out of bootleg media to cater towards this crowd.

The A.I could most likely have an algorithm to determine the dates and authenticity of Mario media which could take in information the previously mentioned databases have. This could explain how it could differentiate what is a bootleg and what is not, considering that they are technically Mario games albeit not licensed by Nintendo themselves.

It is very unlikely that the three pipes were added by Nintendo themselves considering the scope of the media it has covered would not go so well, along with most databases regarding Mario media wouldn't be made or used until after MariOS 64 was cancelled. As such, the probable explanation to how the pipes were there was that they were made by the A.I itself. It also could explain how the bootleg stuff was used as reference, considering Nintendo has a long record of wiping off unofficial Mario content.