If you meant an actual commercial game, double-check the title — the only official Mario Is Missing is the 1992 edutainment game (PC/SNES), which has no “Peach Untold Tale” version.
: The game was released as a free project intended for browser-based play. Mario Is Missing Peach Untold Tale 3 %28%28HOT%29%29
If you love Super Mario fangames with heart, clever writing, and a forgotten heroine getting her due, Peach's Untold Tale 3 is an easy recommendation. 9/10 Mario Is Missing: Peach – Untold Tale 3
: The project gained millions of views and significant community interest over nearly a decade of development before the legal intervention. Community Reception Mario Is Missing Peach Untold Tale 3 %28%28HOT%29%29