Epic presents a deep dive into the technology used to make LEGO® Fortnite fully interactive where nearly everything can be physically simulated and destroyed. This includes an in-depth look at updates to the Chaos Rigid Body Engine, Destruction, and Networked Physics systems as well as gameplay technology that enables nearly every construct to work with every other construct.
https://dev.epicgames.com/community/learning/talks-and-demos/kYOO/chaos-physics-in-lego-fortnite-building-a-fully-interactive-sandbox-experience-gdc-2024