Super Mario Galaxy 2 Wii Unlockables

All Luigi Ghosts

Get 9999 coins and you will automatically unlock all the Luigi ghosts without having to complete every level as Luigi.

• Get 9999 coins
  All Luigi Ghosts

Banker Toad's Items

The toad that banks your star bits will unlocks some items as you deposit more star bits. Those are not for Mario, he will simply use them himself.

• Deposit 1000 star bits
  Glasses
• Deposit 2000 star bits
  Spear and shield
• Deposit 4000 star bits
  Pickaxe
• Deposit 6000 star bits
  Diver Toad
• Deposit 9999 star bits
  The Perfect Run (Grandmaster Galaxy Daredevil Run)
• Deposit 8000 star bits
  Explorer Toad

Coconuts Turn Into Watermelons

Remember In The First Game Collecting 9999 Star Bits Turned All Coconuts Into Watermelons, Well It's Back Again

• Collect 9999 Star Bits
  Coconuts Turn Into Watermelons

Death Count

The Grandmaster Galaxy, which is the secret galaxy that can be unlocked after gathering both 120 normal stars and green stars, holds another secret. Once this final Star from the stage is acquired (The Perfect Run) you will be able to see your death count on your save file. You can now see how many times you died while playing the game.

Grandmaster Galaxy

Collect all 240 stars(Includes Normal Stars, Prankster Comet Stars, and Green Stars).

• Complete the Green Star Challenge
  Grandmaster Galaxy

Green Star Challenge

Collect all 120 stars and beat bowser and you will get a new cutscene with Rosalina reading about the green star to her "children".

• Get 120 stars and beat Bowser
  Green Star Challenge

Play as Luigi in Any Level

Defeat Bowser at Bowser's Galaxy Generator for the first time, then check the Mail Toad for a message from him. Look for the L on the Spaceship, enter it, and then you become Luigi.

• Beat Bowser at Bowser's Galaxy Generator
  Luigi for all levels

Secret World

• Beat the game once.
  Secret World

Unlocking Rosalina save file icon

There is a save file icon that represents Rosalina's head which is unlocked by collecting all 120 Power Stars and defeating Bowser again.

• Collect all 120 Power Stars and defeat Bowser again
  Rosalina save file icon