Yoshi and the Mysterious Book: Switch 2 Title Powered by Unreal Engine 5

Nintendo’s upcoming exclusive, *Yoshi and the Mysterious Book*, is slated for release on the Switch 2 on May 21, 2026. The game’s box art and pre-load data confirm it runs on Unreal Engine 5, marking the first Nintendo-first-party title to adopt the latest engine version.

'Yoshi And The Mysterious Book' Game Engine Seemingly RevealedYoshi and the Mysterious Book uses Unreal Engine 5

Good-Feel, which used Unreal Engine 4 for *Yoshi’s Crafted World* on the original Switch, appears to have built on that experience for the new title. Examination of the Switch 2 preload revealed UE5-specific licenses for SideFXLabs, Stylized Post Process and KawaiiPhysics plugins, confirming the engine version.

'Yoshi And The Mysterious Book' Game Engine Seemingly Revealed

Players guide Yoshi across an island where the sentient book Mr. E has lost the memory of its resident creatures. Classic abilities—tongue, egg-throwing, flutter jump, ground pound—are joined by a Tail Flick that mounts creatures. Players can eat, toss, name, and return discoveries to fill Mr. E’s pages. Scanning amiibo grants fortunes and tokens for hints, while Bowser Jr. and Kamek pursue their own quests.

Yoshi and the Mysterious Book uses Unreal Engine 5

• Engine: Unreal Engine 5

'Yoshi And The Mysterious Book' Game Engine Seemingly Revealed

• UE5-specific plugins detected in the preload: SideFXLabs, Stylized Post Process, KawaiiPhysics

'Yoshi And The Mysterious Book' Game Engine Seemingly Revealed

• Release date: May 21, 2026 (Switch 2 exclusive)

'Yoshi And The Mysterious Book' Game Engine Seemingly Revealed

• Developer: Not officially confirmed (Good-Feel, studio behind *Yoshi’s Crafted World*)

'Yoshi And The Mysterious Book' Game Engine Seemingly Revealed

• Gameplay features: Tail Flick ability, amiibo-based fortune and token system, support for Bowser Jr. and Kamek side quests

Yoshi and the Mysterious Book uses Unreal Engine 5

Adopting UE5 shows Nintendo’s willingness to use third-party technology alongside its own tools. GoNintendo noted the company is “more than open” to experimenting with external engines.

'Yoshi And The Mysterious Book' Game Engine Seemingly Revealed

Nintendo Life reported that the UE5 discovery stemmed from license data in the preload. GoNintendo noted Nintendo’s prior UE4 experience should make the transition “mostly painless,” framing the engine choice as evidence of openness to external engines and industry standards.

'Yoshi And The Mysterious Book' Game Engine Seemingly Revealed

• “We knew that Yoshi and the Mysterious Book uses Unreal Engine, but now we know it's UE5. The discovery was made thanks to the licenses attributed to the SideFXLabs, Stylized Post Process, and KawaiiPhysics plugins (exclusive to that version) in the game's preload.” — Felipe Lima, UniversoNintendo editor

'Yoshi And The Mysterious Book' Game Engine Seemingly Revealed

• “Today we’ve learned that the game was made using Unreal Engine 5, showing that Nintendo is more than open to experimenting with engines outside of their own, as well as industry standards.” — GoNintendo

Yoshi and the Mysterious Book uses Unreal Engine 5

• “Join Yoshi and follow your curiosity on a journey of discovery in Yoshi and the Mysterious Book, launching only on the Switch 2 May 21st, 2026.” — GoNintendo

Yoshi and the Mysterious Book uses Unreal Engine 5

• “Both new players and those already familiar with Yoshi’s world can jump right into Yoshi and the Mysterious Book for an adventure that rewards creativity and curiosity at every turn of the page.” — GoNintendo

Yoshi and the Mysterious Book uses Unreal Engine 5

Nintendo has released in-store demos across North America, letting players preview the UE5-powered experience before launch. Post-release, updates are expected to add creature entries and further amiibo integration.

'Yoshi And The Mysterious Book' Game Engine Seemingly Revealed