

Play through the level until you get to the part, just past the midway flag, with the pink conveyor belts and numerous heavy, grey blocks. After this, you will then have a Star Power-Up to use when you would like to use it.You'll need a Mini Mushroom for this secret. When entering, Toad will be standing by a treasure chest, telling you that "This is a special item." When coming near the chest, it will open, and will release a star. This house is white with yellow stars covering it. When you are ready, you must shoot the character out and hope he hits at least one 1-Up Bubble. You are to enter into one of the cannons and move the cannon to the position you want it to be in so that you can hit some 1-Ups. The bubbles move to make it trickier for you to get them. There are many yellow-colored bubbles that are hold 1-Ups in them. This door takes you to a game called "1-Up Blast." This game is all about trying to get 1-Ups. After entering, Toad again greets you to a door. The color of this house is the same of that of a 1-up Mushroom, which is green with white spots. cards, the game finishes, and the results are announced. If you accidentally match 2 Bowser or Bowser Jr. The hard part is that there are 2 pairs of Bowser and Bowser Jr. There are about 2 to 4 cards with the same type of power-up item on the back of the card. You are supposed to flip over cards to try and find the match of a power-up item. When you enter through the door, a game will start called "Power-Up Blast." Power-Up Blast is a game where you turn over many cards that are hanging on a net. When entering, a Toad welcomes you to a door.

Just like a Super Mushroom's color, this house is red and with white spots. The other way is to save a Toad (after having a message come from Bowser saying that Bowser would throw Toads into ? Box) by getting him out of a ? Box and carrying him to the goal. The first way is to get through a course that will unlock the path to get to the house. There are 3 different types of Mushroom Houses. Once Mario has taken a power-up from a Mushroom House, the house will be void and can not be entered again until Mario gets a game over. When Mario enters, a Toad will offer Mario the choice of three chests each with a power-up inside. 3, mushroom houses appear across the world maps.
