Cheat Codes Hidden sounds: Click on the letter "P" in the word "Mario Paint" or the falling star on the title screen. After awhile a new background will appear. Click on the moving objects to hear a sound. Quickly click on a falling star when it appears. Harps will play as objects fall from the sky. Change Mario's size: Click on the letter "M" in the word "Mario Paint" to shrink and expand Mario. Hit Mario: Click on the letter "A" in the word "Mario" to cause it to fall and hit Mario. Walking "R": Click on the letter "R" in the word "Mario Paint" to put an eye on the letter and move it around. Alternate music: Click on the letters "I" or "O" in the word "Mario". Yoshi cameo: Click on the letter "A" in the word "Paint". Shake the screen: Click on the letter "I" in the word "Paint". View credits: Click on the letter "N" in the word "Paint". Color title screen: Click on the letter "T" in the word "Paint".