The Big Star Door is a dark wooden door depicting a Power Star on the front. They are a larger counterpart of Star Doors and have a wider, more prominent appearance than them, likely because most Big Star Doors lead to a course where Bowser is fought. There are a total of four Big Star Doors, and like regular Star Doors, each of them requires at least a minimum number of Power Stars to open, the number of which is considerably higher than that of a regular Star Door. Like regular Star Doors, the same animation of Mario holding out a Power Star that spins before dissipating is used when unlocking a Big Star Door. Whenever a Big Star Door is entered, its two sides slide into the walls before sliding back together.
In Super Mario 64 DS, Mario is the only one of the four playable characters who can unlock a Big Star Door. Once he unlocks a Big Star Door, any character can enter it.
In Super Mario 64 / Super Mario 64 DS[]
The first Big Star Door is found on the main floor, and it leads to Bowser in the Dark World. It requires at least eight Power Stars to open, or twelve in Super Mario 64 DS.
The second Big Star Door is found on the basement floor. Entering it leads to Dire, Dire Docks and Bowser in the Fire Sea. Unlocking it requires at least 30 Power Stars.
The third Big Star Door is found on the third floor, accessed from the staircase found in the lobby of the second floor. It leads to a room where Tick Tock Clock, Rainbow Ride, and Wing Mario Over the Rainbow can be accessed, and is the only Big Star Door to not lead directly to one of Bowser's courses. Unlocking it requires at least 50 Power Stars.
The fourth and final Big Star Door is accessed in the very room that the third Big Star Door leads into. This Big Star Door leads up to Bowser in the Sky. While it technically does not require any Power Stars, entering this Big Star Door without at least 70 Power Stars (80 in Super Mario 64 DS) results in the staircase being endless. In Super Mario 64 DS, even if the requirement is met, only Mario can go up the stairs, as Bowser only wants Mario to fight him, so the stairs remain endless for Yoshi, Luigi, and Wario regardless.
Slip Slidin' Away • Lil' Penguin Lost • Big Penguin Race • Frosty Slide for 8 Red Coins • Snowman's Lost His Head • Wall Kicks Will Work (N64)/Mario's Super Wall Kick (DS) • Switch Star of Cool, Cool Mountain (DS)
Big Boo's Haunt
Go on a Ghost Hunt • Ride Big Boo's Merry Go Round • Secret of the Haunted Books • Seek the 8 Red Coins • Big Boo's Balcony • Eye to Eye in the Secret Room • Switch Star of the Basement
Hazy Maze Cave
Swimming Beast in the Cavern • Elevate for 8 Red Coins • Metal-Head Mario Can Move! (N64)/Metal-Head Wario Can Move (DS) • Navigating the Toxic Maze • A-Maze-Ing Emergency Exit • Watch for Rolling Rocks • Underground Switch Star
In the Talons of the Big Bird • Shining Atop the Pyramid • Inside the Ancient Pyramid • Stand Tall On the Four Pillars • Free Flying For 8 Red Coins (5th Star, N64) (7th Star, DS) • Tox Box Switch Star (DS) • Pyramid Puzzle
Snowman's Big Head • Chill with the Bully • In the Deep Freeze (N64) • Yoshi's Ice Sculpture (DS) • Whirl from the Freezing Pond • Shell Shreddin' for Red Coins (N64) • Snowman's Silver Star (DS) • Into the Igloo • Red Coins in the House (DS)
Wet-Dry World
Shocking Arrow Lifts! • Top o' the Town • Secrets in the Shallows and Sky (N64)/5 Secrets in the Shallows and Sky (DS) • Express Elevator--Hurry Up! • Go to Town for Red Coins (N64)/Go to Town for the Red Coins (DS) • Quick Race Through Downtown! • Soaked Silver Stars (DS)
Tall, Tall Mountain
Scale the Mountain • Mystery of the Monkey Cage • Scary 'Shrooms, Red Coins • Mysterious Mountainside • Breathtaking View from Bridge (Star 5, N64)/Breathtaking View from the Bridge (Star 7, DS) • Blast to the Lonely Mushroom (Star 6, N64) (Star 5, DS) • 5 Secrets of the Mountain
Roll into the Cage (N64) • Luigi in the Cage (DS) • The Pit and the Pendulums (N64) • The Pendulum Switch Star (DS) • Get a Hand • Stomp on the Thwomp •Timed Jumps on Moving Bars • Stop Time for Red Coins • Tick Tock Silver Stars
Rainbow Ride
Cruiser Crossing the Rainbow • The Big House in the Sky • Coins Amassed in a Maze • Swingin' in the Breeze • Tricky Triangles! • Somewhere over the Rainbow • Switch Star of the Manor
