Adobe Shockwave was once the essential plug-in for interactive website elements and functions. However, it has been long overtaken by more up-to-date options. Its maker has announced the cessation of support for this relative dinosaur, with the exception of some business-focused licenses, on April 9, 2019.
https://www.notebookcheck.net/Shockwave-support-will-finally-come-to-an-end-in-April-2019.413978.0.html