Super Mario 64/Tiny-Huge Island

Location: Upper floor of castle, through a door with a star on it.

Description: A level much like the first one, with one exception. Mario will be either big if he enters on the left side, small if he enters on the right side, and will switch sizes if he goes through a pipe. The entrance room is like an Ames Room (where one appears to shrink or grow depending on where they stand in the room) with three offshoots, one to the small painting (you will enter as a giant), one to the large painting (you will enter tiny), and the third one is normal-sized, except that you cannot enter it.

Bob-omb Buddy: As big Mario, go to where the cannon is. Your Buddy is there. The cannon is on the other side of the wall from where you start, then across all the water.

Star 1: Pluck The Piranha Flower
Enter the course as big Mario, and long jump twice to the left. Jump in to the pipe and kill all of the piranha flowers as small Mario by attacking them. There are five flowers total, and a simple punch will kill them. However, they breathe fire, so if you get hit, be extra careful not to fall in the water - the giant fish down there can swallow you whole.

Star 2: The Tip Top Of The Huge Island
Make your way to the top of the island as small Mario. The star is in a gold ! box, just below the apex. It is easiest to start the ascent big Mario and change to small Mario near the top.

As large Mario, make a charge towards the pipe to the left, and drop down onto the ledge behind it. This triggers a purple button that reveals a bridge for a few seconds. Use a backflip to jump onto the cannonball ramp where you can reach the upper pipe.

If you want to complete the level as Small mario, you need to go through the wall, and swim across. Use the windy bridge unto you reach a bridge leading to the cannon ball ramp. Cross it, and hug the wall as you climb the ramp.

There is a Chuckya waiting a few ledges above the big-island pipe. If you aren't careful, he will throw you all the way back down

Star 3: Rematch with Koopa the Quick
It's easier if you start out as big Mario. Climb up the mountain and go through the tunnel by the boulders coming out. Once you've made mario smaller, go farther than where the boulders are coming from and you will see Koopa the Quick. Beat him down the mountain and you will receive a star.

The easiest way to win the race is to use longs jumps throughout the entire race - until you get to the windy bridge. Once you get there, just stay on the ground and run. You should have enough of a lead from your long jumps to win.

Star 4: Five Itty Bitty Secrets
Find all five secret spots when you are the big Mario. The star will appear on the floating island beyond the big/small pipe on the lowest level. Step on the switch and a number of orange boxes will appear which you can walk across to get to the star.
 * 1) Where the cannon comes out.
 * 2) By the hole in the mountainside near the cannons (bridge leads to it).
 * 3) Where the rolling balls come out.
 * 4) At the very top of the mountain.
 * 5) The small hole in the grey wall where you start, from the side by the beach.

Star 5: Wiggler's Red Coins
As small Mario, launch out of the cannon to the tree up above. Walk across the thin long plank and enter the cave. The coins are inside. You need to swing across the roof for some. Alternative: Either get the turtle shell and ride into the cave or do a wall kick after a triple jump.

Star 6: Make Wiggler Squirm
Go to the top of the mountain as big Mario. Ground pound the ground to make a hole. Go back up as small Mario and enter the hole. Jump on the head of the worm three times for the star.

Star 7: 100 Coins
When you are in big island, you can ground pound the Goombas for a blue coin. There are 15 in all. After that, it's a snap. There are 191 coins in all.

Impossible Coin
There is a coin near the bowling ball generator that is underground and normally impossible to collect. Change views around the generator and you will find it. Walk up to the right side of the ball generator into the corner between it and the mountain and Mario's feet will go slightly into the map just close enough to collect it.