Marvelous Inc. has released the 1.1.1 update for Mecha: Myth Descendants, which brings new bosses, cosmetic items and multiple gameplay improvements to the sequel to the highly mobile mecha action game.This update introduces two powerful new opponents - Stone Tears RT: Ω and Great Mother RT: Ω. They are now open in the "simulator" of the base as a rematch level.In addition, the Cycloa BOSS event that was previously open for a limited time is now permanently open, and players can challenge this powerful enemy at any time.

The update also includes a number of new content, balance adjustments and bug fixes to improve game performance and playability.Players can now switch to the mutated appearance display after unlocking the "Fusion" function. At the same time, two new appearance DLCs - "Formal Suit Suit" and "Control Bureau Researcher Suit" - are now available for free.Other additions include new Wanderer and Immortal encounters tied to specific missions, expanded endgame mission permissions, and a lengthy list of fixes for issues such as weapon duplication, mission errors, and visual anomalies.

Full changelog

Version 1.1.1 (released on October 16, 2025)

Add new boss

The new boss "Stone Tears RT:Ω and the Great Mother RT:Ω"

New heavy battle missions "The battle with Stone Tears RT: Ω" and "The battle with the Great Mother RT: Ω" will be added to the "simulator" in the stronghold.

New additions and adjustments

After unlocking the fusion system, a new function has been added to the "Power Suit" option in OUTER EDIT to turn off the "alienated" appearance

The event boss "Secroya" has been added to the EVENT of the "Simulator" and can be challenged at any time

Fixed the issue where the "Wanderer" equipped with "Avenger" would not appear on the battlefield after completing "Destroy the Shadow Reaver"

Fixed an issue where the Immortal Mecha holding "Strider X" development data did not appear on the battlefield after completing "My Friends Are in Danger!" and clearing the game

Side missions released by "Angel" can now be played after completing the game

Bug fixes

Fixed an issue where "Cycroa Investigation" may be incorrectly displayed as canceled when no emergency mission is held.

Fixed the issue where "Cycroa" may remain in standby mode and not perform any actions.

Fixed the issue where the special effects of soldiers and mechas sometimes failed to disappear

Fixed an issue where weapons may be copied abnormally when obtaining "Gun Arm"

Fixed an issue where "Dauntless" could not be captured

Fixed the abnormal problem that sometimes the name and other information in the dropped props were not displayed.

Fixed the issue where sometimes you could not sprint towards the locked enemy when using "Stupid Fury" while mounted.

Fixed an issue where processing delays may occur when fighting the "Great Mother"

Fixed an issue where two "Rainbow Gods" may appear at the same time in the stronghold.

Fixed other minor game issues