Designed with very young children in mind, Mario's Early Years: Fun With Letters takes place in seven different worlds: Alphabet World, Last Letter World, Vowel World, Building World, Sound World, Sentence World, and First Letter World. Each world features a series of point and click games designed to help youngsters learn their letters and words. You can play the game as Mario, Princess Toadstool, or Yoshi. When you point and click on an item, the computer tells you things like what the word or letter is or how it fits in a sentence. Below each play field (except in the Alphabet World), Mario's brother Luigi lies sleeping. If you wake him up, this adds a new dimension to the game. The computer begins asking you to identify letters, fill in sentences, and other simple tasks related to words and letters. The items depicted include apples, pigs, caps, suns, and other common objects.