Sound World
Template:Location-infobox Sound World is a world in Mario's Early Years! Fun with Letters. It is one of the seven islands in the game and is represented by an island with a book containing a dinosaur on one page and the letter D on another.
This world takes place within a library. Like all the levels in the game, Mario goes through pipes to go to the next level. Each level is generally the same, with the third level being the reception desk.
For this location, the player learns how to identify words that start with various letter sounds. There are three words, but only one of them starts with the letter sound indicated on-screen. The player must click this word to continue. There are three levels and at the end of each correct answer, a random character pops up to congratulate the player.
| Mario's Early Years! Fun with Letters / Mario's Early Years! Fun with Numbers / Mario's Early Years! Preschool Fun | |
|---|---|
| Characters | Mario • Luigi • Princess Peach • Toad • Yoshi • Baby Yoshi |
| Enemies | Piranha Plant • Goomba • Bowser • Larry Koopa • Iggy Koopa |
| Worlds (Fun with Letters) |
First Letter World • Vowel World • Alphabet World • Sentence World • Building World (SNES · PC) • Sound World • Last Letter World • Sing Song Worlda • Story Worlda |
| Worlds (Fun with Numbers) |
Number World • Counting World • Comparing World • How Many World • Shape World • Same and Different World • Sorting World • Sing Song World |
| Worlds (Preschool Fun) |
Shape World • Counting World • Body World • Listening World • Opposite World • Color World • Sing Song World • Time World |
| Other | Warp Pipe • Gallery (Preschool Fun) |
