bbgames.7z

The original 4chan post, containing just an Anonfiles link.

bbgames.7z is the name of one of the leaked archives from the Zammis Clark Breach. It was leaked on July 26th, 2020. This leak was major, containing source code for many Nintendo 64 games and Game Boy Advance games, including Super Mario 64. This archive seems to contain a dump of the "bbgames" tree from RouteFree's servers. The data was most likely downloaded by Zammis Clark from a part of Nintendo's servers containing an archive of all of RouteFree's development trees, for example, "bb" and "ng", which were leaked as part of unsorted.7z.

"L IS REAL 2401"

The files in the Super Mario 64 source code, proving Luigi's existence.

Inside the archive was a part of the source code for Super Mario 64. Inside the source code were files relating to Luigi in Super Mario 64. This caused an explosion in the Super Mario 64 community, drawing a connection to the "L is Real 2401" conspiracy theory, claiming that Luigi was supposed to be part of, or used to be part of Super Mario 64, before he was removed.