Where Are Metal Gear Solid Peace Walker Saves Located?
Peace Walker on PC stores saves inside the game's install folder under mgspw_savedata_win, one numeric subfolder per account.
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The Peace Walker Master Collection Version landed on PC on August 27, 2026. Its save arrangement is the same slightly odd one as Metal Gear Solid 4: everything lives inside the install folder, in a directory named mgspw_savedata_win, with a numeric subfolder per Steam account.
Steam Cloud handles syncing, so this is mostly reference material. It matters when you move your Steam library, when you back up before a reinstall, or when you wonder why there is no Peace Walker folder anywhere in Documents.
Where Metal Gear Solid: Peace Walker - Master Collection Version stores this, by platform
<SteamLibrary>\steamapps\common\MGS_PW\mgspw_savedata_win\<SteamID>
Replace the angled placeholders. The install folder is MGS_PW and the final folder is your numeric Steam account ID. Because saves sit inside the install directory, uninstalling or moving the library takes them along.
~/.local/share/Steam/steamapps/common/MGS_PW/mgspw_savedata_win/<SteamID>
Since saves live in the install folder, the Linux path is not inside a Proton prefix. Treat backslashes as forward slashes and expect the same numeric per-account subfolder.
Frequently asked questions
Where is the Peace Walker save folder on PC?
Inside the game's installation directory, under mgspw_savedata_win. The exact path depends on where your Steam library lives, and the final subfolder is your numeric Steam account ID. Nothing is saved to Documents.
Can I transfer a Peace Walker save between Steam accounts?
You can copy the numeric folder, but saves are made for the profile that created them and cross-account moves are not supported. Use Steam Cloud within one account, or copy between your own machines on the same login.
Does uninstalling delete Peace Walker saves?
Yes, because they live inside the install directory. Steam Cloud is the usual safety net. Make a manual copy of mgspw_savedata_win before uninstalling, then paste it back after reinstalling if you want to be certain.
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