While Inno Setup is a tool to create installers for Microsoft Windows applications, innoextract allows you to extract such installers without using Wine. In particular, innoextract supports GOG.com installers and Arx Fatalis patches. To extract a file to the current directory, run: $ innoextract <file> A list of available options can be retrieved using: $ innoextract --help Documentation is also available as a manpage.