Delve into the technical intricacies of Noita's physics engine in this 2019 GDC talk by Nolla Games' Petri Purho. Explore the challenges and solutions of scaling up falling sand simulations for large continuous worlds, integrating destructible rigid body physics, and creating emergent gameplay. Learn about multithreading problems and solutions, game design considerations for roguelite elements, and the process of fixing glitches in a physics-based game. Gain insights into the development of Noita's unique gameplay mechanics and the creative decisions behind its design. This session offers valuable knowledge for game developers interested in innovative physics simulations and emergent gameplay design.