This is the standard Windows "Saved Games" folder (usually C:\Users\[Username]\Saved Games\darksiders1.exe\ ).
Files may sometimes be found in %USERPROFILE%\Saved Games\darksiders1.exe\ with a .bin extension. Linux (Steam Play/Proton) If you are playing on Linux via Steam, the location is: /steamapps/compatdata/462780/pfx/ Configuration File Location
If you need to adjust game settings or delete a corrupted configuration, those files are located separately: %APPDATA%\kaiko\darksiders1\ darksiders warmastered edition save file location
%USERPROFILE%\Saved Games\darksiders1.exe\
Note that Warmastered Edition often compiles all save slots into a single file rather than separate files for each slot. This is the standard Windows "Saved Games" folder
Darksiders Warmastered Edition supports Steam Cloud. If you plan to manually move or edit saves, it is often recommended to disable Steam Cloud temporarily to prevent the game from overwriting your changes with older cloud data.
While difficult, some players have successfully imported saves from the original Darksiders: Wrath of War by renaming the old save file to keen_savegame_0_0.sav and placing it in the Warmastered Edition's Steam folder. Darksiders Warmastered Edition supports Steam Cloud
C:\Program Files (x86)\Steam\userdata\[Your Steam ID]\462780\remote\autocloud\save