.SII File

File extension sii is associated with the 18 Wheels of Steel: Haullin' a trucking simulation computer game for Microsoft Windows operating system developed by SCS Software and released in 2006.

A .sii file contains truck definition data.

This sii file type entry was marked as obsolete and no longer supported file format.

This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.

Files with sii extension can be found as truck definition files from 18 Wheels of Steel computer game.

How to open:

You can open and edit *.sii files using any text editor.

How to convert:

No *.sii converter exists, but you can treat these files like any other text files.