it is so possible just check on YouTube because there is videos and i tried what they did and it worked all i had was 14 stars
Collect all 120 stars and go to the cannon outside. If you are playing super Mario 64 ds get all 150 stars and go to the cannon outside.
it is not stars it is a world
Get all 150 stars
Waluigi isn't in that game. The cannon in the castle grounds is unlocked with 150 stars.
All 120.
Collect 120 stars
get all of the stars and then jump in the cannon near the lake.
You gotta get all of the stars, then the cannon outside will open up.
Im not sure but I think you have to get all 150 power stars.
You must collect all 150 stars, then it will automatically open.
To get on the castle roof of the castle
No.