The Chrome Shockwave Plugin was a browser extension that allowed Google Chrome to render interactive content created with Adobe Shockwave (specifically .dcr and .dir files). It served as a bridge between the browser and the Shockwave playback engine.
It was predominantly used in the late 1990s and 2000s to power high-fidelity web games, interactive educational simulations, 3D environments, and rich media applications that standard HTML/CSS could not support at the time. chrome shockwave plugin