The "3 New" part of the keyword is crucial. Fans theorize it stands for:

The specific title "Peach's Untold Tale" usually refers to a heavily modded and expanded version of the original Mario is Missing! concept.

Title: Deconstructing the Phantom Sequel: “Mario is Missing: Peach’s Untold Tale 3 – New” as a Folklore of Fan Games

Abstract:
This paper examines an alleged fan-made sequel to the 1992 edutainment title Mario is Missing. While no verifiable copy exists, the title’s circulation in forums and search queries reveals desires for narrative closure, agency for Princess Peach, and subversion of edutainment tropes.

Introduction

Background

Analysis of the hypothetical “Untold Tale 3 – New”

Methodology

Findings

Discussion

Conclusion
The phantom game is more revealing than a real one: it highlights fan desire for meaningful Peach stories, critique of edutainment, and the internet’s power to generate collective myths.

For the first time in the series, Princess Peach is playable in segmented flashbacks that unlock as you restore chapters. These segments are introspective, puzzle-heavy vignettes where Peach, inside the storybook, can rewrite her own dialogue to change outcomes. Choose to be diplomatic, cunning, or commanding—each choice unlocks different memory fragments.

Example: In "Tale of the Gilded Cage," Peach convinces a dragon not by force, but by reorganizing its stamp collection. A quiet, brilliant moment of character growth.