Atomic Combat saved game file
File type: Game file
The .mato file extension is used by Atomic Combat for saved game data.
File type category:
Game file
Date updated: October 2, 2026
Atomic Combat is a location-guessing game in the spirit of Battleship for Microsoft Windows. Its saved games use the .mato file extension.
A .mato file contains a saved game position, allowing Atomic Combat to preserve the current state of a game.
Open a .mato file in Atomic Combat on Microsoft Windows. The game should load the saved position when the file is opened through its save-game function.
The file is not intended to be opened as a standalone document in another application.
A .mato file is a saved game rather than a document or media file, so it cannot be meaningfully converted to another format.
Use Atomic Combat to load and save the game using the game's own options.
Software applications that handle other tasks involving mato files:
Microsoft Windows
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