On April 9, 2019, Adobe officially ended the Shockwave product line and no longer provides any technical support. Now, all versions of Shockwave Player have disappeared from Adobe’s official website, and the original page is now redirected to a software-finished FAQ Q&A page, End of Life for Adobe Shockwave.
Adobe Shockwave was a multimedia platform for building interactive multimedia applications and video games. Developers originate content using Adobe Director and publish it on the Internet. Such content can be viewed in a web browser on any computer with the Shockwave Player plug-in installed. via_Wiki
Prior to this, Adobe had abandoned the production tool Adobe Director on February 1, 2017. The macOS version player was no longer available on March 1, 2017, and the last Windows version was left today.
Adobe said that with the advancement of technology and the popularity of mobile devices, interactive content has turned to new platforms such as HTML5 Canvas and WebGL. Shockwave is rarely used, so it decided to give up.
Next year, Adobe Flash Player will also leave us, and an era is over.