Blasting Bullet Factory

Blasting Bullet Factory is a cut level that has been believed to be replaced by Tick Tock Clock, as it shares multiple elements from that level. despite this, players have reported that they have encountered the painting to the course instead of Tick Tock Clock's clock face. This level has been described to be extremely difficult.

Geography
This course is very similar to Tick Tock Clock, with several reused assets appearing in Blasting Bullet Factory. It usually branches off of at several points, and usually has lava scattered throughout. It is usually inhabited by several mechanical enemies, particularly Bullet Bills.

Missions
This level usually has stars similar in nature to Tick Tock Clock, such as climbing to the top of the level. However, several stars appear to be unique, such as having to break a window to access an area containing the star. Notably, a common star is finding a Motos and defeating it.

Theorizing
This level looks very finished, so it was probably cut late into development. The likely reason that Blasting Bullet Factory was cut from Super Mario 64 was because of it's difficulty. There is a possibility this is the unused Motos Factory level, seeing as it contains a Motos and is a factory.

This level might have been originally meant to be a second lava level, like an analogue to Lethal Lava Land, considering its painting also uses the same painting frame texture as Lethal Lava Land and it has lava throughout the level.