Yoshi and the Mysterious Book launched on Nintendo Switch 2 on May 21, 2026, and its core loop is built entirely around one thing: filling out Mr. E's Creature Index. There are 59 creatures to find across 10 chapters, each with its own habitat, its own set of interactions, and a unique pool of discovery stars that feed directly into chapter progression. Miss too many discoveries and you will stall out. Know what each creature does before you walk in and you will clear habitats far more cleanly.
The Creature Index in Mr. E
How does the Creature Encyclopedia work?
Every creature in the game has its own entry inside Mr. E's Creature Index. Completing different interactions with a creature, whether that means gobbling it, carrying it, bouncing off it, or combining it with another creature, records those interactions as Discoveries. Each Discovery earns Star Points, and accumulating enough Star Points is what unlocks new chapters. There are 6 chapters in the main story and another 6 unlockable in the post-game, with roughly 5 to 6 habitats per chapter.
The Creature Index is only fully populated after completing all levels including the post-game content. That means you will not see all 59 entries on your first playthrough pass.
Each habitat is designed around one featured creature, but other creatures from different chapters often appear inside it. Always check for cross-creature discovery opportunities before leaving a habitat.
All 59 creatures: abilities, discovery stars, and first encounter
The table below lists every creature confirmed in the sources, their primary abilities as documented by Game8, their total discovery star count, and the chapter where you first encounter them. Creatures without a confirmed discovery star count in the sources are marked accordingly.
The Bewilder Bird only has 16 discovery stars, the lowest of any named creature in the index. Do not neglect it assuming it has fewer interactions to find. Its ability to transform into any creature you have already catalogued makes it one of the stranger discovery sessions in the game.
Crazee Dayzee bloom trigger
Which creatures appear in the most habitats?
Crazee Dayzee is the creature you will see everywhere. It appears in over 30 habitats across all chapters, making it the most cross-habitat creature in the entire game. That means discoveries you unlock for Crazee Dayzee in Chapter 1 can carry forward into interactions you find much later. Its 43 discovery stars reflect that breadth.
Floofly comes second, appearing in well over a dozen habitats from Chapter 2 through the post-game. Its ability to gather with others and carry Yoshi upward makes it a recurring mobility tool that designers clearly leaned on throughout the book.
For completionists, the creatures with the most locked-in single habitats are the ones to prioritize on first pass. Thudd, for example, only appears in its own domain with no confirmed additional habitats, meaning you cannot come back to it incidentally. Same goes for Weewoo, Casterway, and Jam Guy in Chapter 3 and 6 respectively.
Creatures like Thudd, Bewilder Bird, and Crudworm have low discovery star totals (16 each for the latter two) but still require dedicated habitat time. Do not skip their levels assuming they are minor entries.
Glubbit bubble mobility route
How to make discoveries efficiently
The discovery system rewards experimentation over speed. Every creature reacts differently to Yoshi's seven core moves: Gobble (B), Tail Flick (X), Egg Throw (after Gobble creates an egg), Flutter Jump (hold A mid-air), Ground Pound (tilt Left Stick down mid-air), Sprint (sustained movement), and Observe (crouch or pause to watch). Testing all of these on each new creature is the fastest way to fill out entries.
Here is the priority order for efficient discovery farming, based on the wiki's beginner guide recommendations:
- Clear the main habitat objective first to lock in the chapter's primary discovery chain.
- Run a dedicated cleanup pass immediately after the main objective, before opening the next chapter.
- Use Tokens to purchase discovery hints only after you have exhausted all visible routes.
- Check Mr. E's notes after each habitat to catch high-value discoveries you may have missed.
- Bring knowledge of creatures from earlier chapters into new habitats. Known behaviors often unlock extra events.
For a full chapter-by-chapter breakdown of Smiley Flowers alongside creature work, the all Smiley Flower locations guide covers all 260 flowers with habitat-by-habitat tips.
What are the most discovery-rich creatures in Chapter 1?
Milde leads the entire game with 47 discovery stars, but it does not appear until Chapter 2. For Chapter 1 specifically, Crazee Dayzee at 43 stars and Croakaoke at 41 stars are the most rewarding targets. Croakaoke's musical jump sequences, where stepping on them in the right order triggers the full Do-Re-Mi scale, account for several of those entries. Missing the reversed scale sequence (Do-Ti-La-So-Fa-Mi-Re-Do) is one of the most common Chapter 1 gaps players report.
Bunchabee at 39 stars is also deceptively deep. The hive removal sequences, including clearing hives inside the cave and saving a Smiley Flower without being spotted, require specific routing that is easy to skip on a first pass.
For a complete route through Chapter 1 with every creature interaction mapped out, the Wildwoods chapter walkthrough covers all 20 Smiley Flowers and key discoveries in one place. Chapter 2 players should check the Mountaintops chapter walkthrough for the full 26-flower route including Milde, Thudd, and Plumebrella interactions.
Croakaoke musical jump order
Post-game creatures: what changes after Chapter 6?
The post-game unlocks 6 additional chapters beyond the main story's 6. These chapters introduce creatures like Baby Floofly, Magnified Scatterpuff, Upshoot, Hufungous, Springhopper, and Magnified Lunge Fish in Chapter 9, and the Chapter 10 roster of Blorp, Raven, Cuttlefwoosh, Eleedee, Yu Ef Oh, and the final Moon encounter.
The Blorp is worth calling out specifically. It merges with other Blorps to create new variants, and different color combinations produce distinct traits: Green Blorps create a caped variant that lets Yoshi fly and glide, Red Blorps produce beak creatures that crack nuts, and Gold Blorps generate a glowing aura. This makes the Blorp habitat one of the most combinatorially complex in the game.
The post-game also unlocks Exploration Tools, which are separate from the creature discovery system but help with cleanup. Finishing the main 6 chapters first is the intended path before tackling post-game habitats.
If you are still figuring out the basics of how Stars, Tokens, and Discoveries connect, the beginner's guide to Yoshi and the Mysterious Book covers the full progression loop with essential tips for spending resources wisely. For everything else, the complete Yoshi and the Mysterious Book guide collection has chapter walkthroughs, amiibo details, and collectible routes all in one place.