Finding the depends primarily on which storefront or platform you are using. Because this remastered version changed how save data is handled compared to the original "Legacy" edition, the paths can be tricky to locate. Windows Save File Locations
save file location , the digital ledger where War’s journey—his betrayals, his conquests, and his quest for balance—is etched in stone. darksiders warmastered edition save file location
/home/deck/.steam/steam/steamapps/compatdata/46200/pfx/drive_c/users/deck/Saved Games/darksiders1/ darksiders warmastered edition save file location
/home/deck/.steam/steam/steamapps/compatdata/50620/pfx/drive_c/users/steamuser/Documents/Darksiders Warmastered Edition/ darksiders warmastered edition save file location