.M4S File

.m4s is Myst IV: Revelation saved game

Key Features: .M4S File Extension

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The m4s file extension is mainly related to Myst IV: Revelation computer game and used for its default save game files.

The m4s file is used to store player's progress in the game.

When placed in the proper folder, you can load up the saved game position in the game.

Saved games are not meant to be converted to anything else.

Associate the M4S file extension with the correct application. On :
Windows: Right click on any M4S file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.M4S files". Mac: Right click (or Ctrl-click) the M4S file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
Update your software that should actually open .M4S is Myst IV: Revelation saved game. Because only the current version supports the latest M4S file format. Search, therefore, e.g. on the Ubisoft Entertainment S.A. manufacturer website after an available .M4S is Myst IV: Revelation saved game update.
To make sure that your M4S file is not corrupted or virus-infected, get the file again and scan it with antivirus software.