First, go to the part of the island that sticks up. Then go as far down as you can go, then turn left and you will see a cave. Go in the cave, go up to the door, and click on it with your pointer. It should tell you different secrets. You can go to it as many times as you want.

Enter the elevator in the Information Center. Then allow one minute to elapse before exiting the elevator. (Use the arrow keys to fly.)

Press [Esc] during game. Then turn the radio on and click the red button when prompted to exit.

Press Z + T during game.

Play as Laura and click on other characters to change their disposition (make them grumpy, happy, etc).

Play as Mama and click on other characters to give them colds, make them sneeze, etc.

Play as Nick and click on other objects to change their color.

Play as Pepper and click on objects to change them into hats.

Click on the gap in front of the Pizasony pizza shop. Then click on the radio and select your favorite song.

Play as Pepper, the pizza delivery kid, and build a helicopter. Then deliver a pizza to the jail. Brickster will use the pizza to escape and will flee in the helicopter.

Using the elevator in the Information Center, go to the third floor. You will see two arrows. Click on the rightmost arrow and go to the desk. Open the middle drawer.

Using Pepper, help Brickster escape from jail. Then follow the dirt road to the left of the racetrack, picking up the pieces of his helicopter along the way. You should meet Laura and Nick. When Brickster passes by, follow him into the secret cave and recover the remaining helicopter pieces. Reassemble the helicopter and use lead Brickster to the authorities by dropping pizzas.

Get a secret map of the course on the jet ski or racecar by doing this:
1)Build a jet ski/racecar
2)Get in
3)Start the race
4)Click on the gray bar on the right and a map will appear showing you in green and your opponents in red.

NOTE:this will work only when you are racing on the jet ski.