First, you will need to get all 120 Power Stars from all 7 worlds. Next, beat Bowser. After the credits, a cutscene will display Rosalina reading a story about the Green Stars. After the credits, Green Stars will be available in every Galaxy. Once you collect all those, the final galaxy, Grandmaster Galaxy will be unlocked
You get every green star.
there red
super Mario galaxy 2
Yes, You can play as Luigi in Super Mario Galaxy 1 & 2. In Super Mario Galaxy 1, however, you need to really want him. He'll only be playable after collecting 120 stars with Mario (Double what's needed to beat the game).
yes in super Mario galaxy 2 you get gobbbbleguut
It is super Mario 64, Super Mario galaxy, and Super Mario galaxy 2.
Bowser
120.
throw
No, there are no cheats in Super Mario Galaxy.
Super Mario Galaxy happened in 2007.
You need to play a few levels on Mario Kart.