FSK 18 is a classification used in Germany to indicate that a film or video game is suitable only for adults aged 18 and older. This rating is part of the Freiwillige Selbstkontrolle (Voluntary Self-Regulation) system, which aims to protect minors from inappropriate content. Content rated FSK 18 may include graphic violence, explicit sexual scenes, or other themes that are considered unsuitable for younger audiences. The rating helps consumers make informed choices about what media is appropriate for them or their children.