In terms of propaganda, particularly on the Internet, the Islamic State (IS) has set new standards. Although the organisation has been defeated militarily, individual IS-related attacks continue to take place. Additional preparations must be made with a view toward countering successor organisations. This paper first examines the radicalisation process as well as the IS narrative. Against this backdrop, it develops three rules of thumb with which to create counter- and alternative narratives aimed at delegitimising IS. To this end, it draws on practical examples from partner nations.