What is a particle system?

A particle system is a way to model fuzzy objects, such as rain, fire, clouds, smoke, and water, which do not have smooth, well-defined surfaces and are nonrigid. The system is an optimized method to achieve such fluid-looking and dynamic visual representations by controlling the movement, behavior, interaction, and look of many tiny geometry objects or sprites.

Using a combination of different particles made of different shapes, sizes, materials, and textures, with different movement speeds, rotation direction/speeds, spawn rates, concentration, visibility duration, and many more factors, we are able to create a huge variety of dynamic complex systems.

In this chapter, we will learn about the components of the particle system using Unreal's Particle System editor and Cascade editor and use these editors to create a few additions for your level.