He dragged the file into the plugins folder. He launched Cinema 4D.

X-Particles is a particle system for Cinema 4D that allows users to create complex simulations and effects. Unlike standard particle systems that come with 3D software, X-Particles offers more control and flexibility, enabling the creation of realistic and detailed effects such as fire, smoke, water, and more. It's widely used in film, television, and advertising for its ability to produce high-quality visual effects.