If you want to move forward with modifying your game, let me know: Which you are modifying (ETS2 or ATS)?
The revolutionary change came with , a browser-based tool created by community member zerocarbonx . It is a modern, open-source reimplementation of the classic decryptor, available entirely in your web browser without any downloads. The official tool can be found at https://sii-decode.github.io/ . Not only is it convenient, but it also supports the decryption of profile saves, game configuration files, and even achievement tracking in future updates.
Navigate to your Documents folder: Documents\Euro Truck Simulator 2\profiles\YOUR_PROFILE_ID\save\autosave_1 (or any numbered save slot). Locate the game.sii file. Step 2: Use an Online SII Decryptor Open the SII Decode Online website in your browser. Drag and drop your game.sii file into the designated area. sii decrypt online
SII Decrypt Online: Your Guide to Modding Truck Simulator Saves
The structure of SII codes can vary depending on the system or organization implementing them. Typically, they are alphanumeric and can range from a few characters to more complex sequences. If you want to move forward with modifying
Use the built-in "Export," "View Payload," or "Log Viewer" utilities.
Inside your profile folder, you'll see a save folder. Open the specific save you want to edit (e.g., autosave , quicksave , or your manual save name). The most important file is often simply named game.sii or may be compressed as game.sii.enc . The official tool can be found at https://sii-decode
To optimize performance and save drive space, modern iterations of ETS2 and ATS store these save files in a compressed, encrypted binary structure (BSII) rather than plain text. If you attempt to open a standard game.sii file in an ordinary text editor, it displays as an unreadable wall of garbled machine code.