Also, consider the security issues: Like Flash, Shockwave had vulnerabilities that led to its discontinuation. Mention specific instances if possible, but maybe not necessary in a general post.
Need to verify the exact dates of releases and discontinuation. For example, when was Adobe Shockwave last released? Maybe check Adobe's official site or credible sources. shockwave plugin
Wait, when exactly was the plugin discontinued? Adobe officially ended support for Shockwave in December 2020, same as Flash. But maybe it was phased out even earlier. Need to verify dates. Also, consider the security issues: Like Flash, Shockwave