How do I unlock the "?

When you get 15 stars go into the main entrance hall and stand on the cirlce pattern in front of the steps. Then look up into the light and you should go into a red coin hut with a big red button on the place in the middle ground pund this button and all the red blocks will be available

When you get 15 stars, go into the main hall and you should see a shining light going onto the round mat. Press the button to look around, then look up at where the light is coming from. You will be transported to a level. You will flying. Fly around for a bit if you want, and collect the red coins later, but remember, the cap doesn't last forever. Land by flaying into the ground or by flying over it and doing a ground pound onto the ground. Ground pound the switch to activate all the "?" switches.

Lugia_Dude

i wasnt trasported to a level\

I'm looking into the light and it says "A voice from above is saying [color=red]'Hey... Mario...'" How do I get up?

I had the same problem don't worry. You have to be Mario, then stand on the sun part and press X, not B or A, X then look up. You will be transported. Hope this helped.

Press x up and you will be transported to a flying level

Ok but I can't look into the light all it says is a voice from above is saying hey mario so how do I get there

Keep Y pressed, after a second or two you can look free around with the arrowkeys.

NOTE: You MUST be mario to get this.
When you get 14 stars, Press X (you may have to do it two or three times,) and look up into the light on the ceiling above the sun picture in the castle entrance.

When you enter the main entrance of the castle you should see a light glowing onto the sun on the floor stand on that then press x to view let it go then press down arrow key andit should let you look up into the light once that happens you should end up in the sky with mario and his wIng cap on then as the directions should tel you fly you to the middle platform then ground pound the big red ? Mark then it's going to ask if you want to save progress save it and on any level you will be able to hit a ? Block

You don't have to have 15 stars, go to the main entrance and stand on the cicle and press X and look up at the sun, then you get telleported. Hope this helped

When it says luigi can use agility to slip through wire fences does that mean with his flower power invinsbility

I tried to do the transporting thing and all, but when I get to the secret level, I can't control it. The character just goes down by itself until it transports back into the castle again. Plus, I have Yoshi. HOW DO YOU EVEN GET MARIO???!!! :?

When you get 15 stars you press X in the light in the main room and you start flying and tou hit the red ? Switch.

Hi ok all I know is you must have mario and 15 stars. Go down to the main fower and go to mario's view and thenpush down and look around then you will be flying fly to the top of the tower press the big red button down then go get the red coins for a star I hope this helped!