- Name's the Same: The theme for the cave levels is called "Crystal Caves". There's also a level in Donkey Kong 64 called "Crystal Caves".
- Real Life Writes the Plot: Notice how in this game and successive Yoshi-themed games that if you complete them with top marks, you get a red flower drawn on your results? This is actually a tradition/cliche in Japan dating back to primary schools where if the teacher is especially pleased with your work, you get a flower circle drawn on the paper. Essentially, the Japanese version of getting a gold star in America.
- Recycled Set: The Advance version recycles sounds originally used in Yoshi's Story.
- Market-Based Title: Most likely to play on the success of Super Mario World, the original game was named Super Mario World 2: Yoshi's Island in North America and Europe, despite the fact that it is a prequel. In Japan, it was simply called Super Mario: Yossy Island. In all countries, the Super Mario World 2 part is dropped completely from the GBA port, in favor of Super Mario Advance 3.
- Moved to the Next Console: Touch & Go started life as a Gamecube title before being moved to the DS to utilize the handheld's features.
- Sequel Gap: Twice. DS was released 11 years after the original. Yoshi's New Island was released eight years after DS.
- Speedrun: Comes in three flavors—glitched, any% glitchless, and 100%.
- Trope Namer: For Ground Pound and Time Keeps On Ticking.
- What Could Have Been:
- The original plan for loosing Baby Mario, instead of him being trapped crying in a bubble in the final game, had him instead silently crawl around as time for Yoshi to get him back ticked down. This was changed as the team thought there was nothing encouraging players to get Mario back as fast as possible.
- There are a few unused transformations for Yoshi in the game, including a mushroom, a plane, and a walking tree.
- There's an oft-told story that Shigeru Miyamoto's bosses at Nintendo were so impressed with the original Donkey Kong Countrynote that they wanted this game to go in a similar direction, which Shigeru Miyamoto disagreed with, creating the well received crayon-style graphics as an act of rebellion. A unreleased demo called Super Donkey had an art style reminiscent of Yoshi's Island and featured the classic Donkey Kong as a boss.
- A prototype of Yoshi's Island featured multiple gameplay and visual differences: throwing eggs was strength based, Yoshi couldn't lay eggs and instead got them from boxes or killing enemies, Mario crawled on the ground quietly rather than floating in a bubble crying, the score system had different objectives, the map was more detailed and animated, level segments were in different worlds, and the bottom HUD from the pause screen was part of the main gameplay.
- Working Title:
- Super Mario World 2: Yoshi's Island was once titled Super Mario Bros. 5: Yoshi's Island in an early prototype, the sequel to Super Mario World (known as Super Mario Bros. 4 in Japan) as originally intended.
- Yoshi's Island DS was titled Yoshi's Island 2 in early marketing.
Trivia / Yoshi's Island