From Emanuele Feronato: "One of the new Phaser 3 features is Matter.js, a 2D rigid body physics engine for the web written directly in JavaScript ÔÇô this means it wasnÔÇÖt ported from another language like it has been done with Box2D.
As usual, the first example of a physics engine is the ÔÇ£create a crate / remove a crateÔÇØ script.
Touch the canvas in an empty spot to create a crate, or touch a crate to remove it."