According to multiple reports, Yoshi And The Mysterious Book is Yoshi's first major adventure on the Nintendo Switch 2. The game is hinged around a talking book named Mr. E, who guides players through illustrated double-page spreads.
Each chapter in the book consists of an illustrated double-page spread housing different critters themed around an environment, such as the Wildwoods. Players inspect creatures with a magnifying glass to log their existence. Notable wildlife can be investigated further in tailored levels to record their behaviors.
Each discovery about a creature earns a star, and overall progress is tied to stars accumulated. GameCentral reports that the game has a stronger gameplay hook than expected. The exact release date, number of chapters, and full list of environments have not been confirmed.