With the help of what technologies, tools or libraries, something similar is done, as on this site?

Question

css

magicalmaps.fantasticbeasts.com - a cool effect when you move the mouse over the screen, I need something similar for the theme of the project, in which direction to dig? What is it called anyway?

Answer 1

With the help of JS, the position of the mouse is caught and a “smoke” created using three.js is attached to these coordinates

Answer 2

This is cannon.js
(based on three.js and ammo.js)