Pokey Oasis

Pokey Oasis is a rare level found in some personalized copies of Super Mario 64. It is usually connected to Shifting Sand Land in some way, such as being accessed through Shifting Sand Land or in place of it, though it has been reported to be unconnected entirely. The level itself takes the appearance of a small desert area with several Pokeys and a large body of water.

Geography
Pokey Oasis is usually a small level, with 2 main segments. The first segment is most commonly a desert area similarly to Shifting Sand Land that would have several trees and enemies, as well as a Metal Cap in some copies. The second segment is reportedly a lake making up a majority of the level. The desert segment's enemies have reported to usually only be Pokies, though other enemies such as Goombas and even Klepto have been reported.

Stars
There are 4 different common stars that have been reported in this level, though only 1 or 2 have been reported at a time. The most common star is an eight red coins star, with the red coins usually being found in the lake, though some can reportedly appear in the first segment. The second most common star is simply located at the bottom of the lake, though is blocked off by a jet stream similarly to Jolly Roger Bay and Dire, Dire Docks, requiring the Metal Cap to access. The other 2 stars have been reported to be obtained from Klepto, and strangely a Koopa the Quick race around the desert area.

Mario Kart 64 Misremembering
Oddly, several people have reported that Pokey Oasis was a race track in Mario Kart 64, despite the fact it is not in the game. This anomaly has been attributed to the Koopa the Quick race being misremembered as a Mario Kart 64 race, or potentially just the mandela effect or faulty memory. However, some people have proposed the level being tied to Mario Kart 64 in some way, though this has gone unconfirmed.