Green, Green Groves

Green, Green Groves is a hidden course in certain personalized copies of Super Mario 64. It is often found in a green portal similarly to Hazy Maze Cave. Upon collecting all 7 stars in this course, the player unlocks Luigi as a playable character.

Geography
The starting area of this course is near identical to the Castle Garden. However, there are more doors. One door leads to a hedge maze, and another is locked and must be unlocked for a star. There is also a tree in the main area that drops apples that can contain a star. There is also a cracked wall that has a star behind it that must be broken.

Missions
"1. MIDDLE OF THE MAZE""2. THE MAZE'S 8-COINS""3. HIDING IN AN APPLE""4. 5 FLOWERS' SECRETS""5. BEHIND THE LOCKED DOOR""6. BEHIND THE WALL""7. 100 COIN STAR"

Middle Of The Maze
In this mission, the player must get to the center of the hedge maze.

The Maze's 8-Coins
In this mission, the player must find 8 red coins in the hedge maze.

Hiding In An Apple
In this mission, the player must use Yoshi to eat an apple that contains a star.

5 Flowers' Secrets
In this mission, the player must find 5 secrets on the unused flowers.

Behind The Locked Door
In this mission, the player must find a key and unlock a door.

Behind The Wall
In this mission, the player must use Wario to break through a wall.

Shadow Mario
In one report, upon collecting the first mission's star, they ended up in a long hallway being chased by a black Mario model that was A-posing, similarly to the Wario Apparition. Upon reaching the end of the hall and escaping it, the player unlocked Luigi.