Challenge: Creating Rain with Particle Systems

1. Create a new Particle System in an open demo region of the scene

2. Configure the General settings:

a. Increase the Duration of the particle system to around 10

b. Increase the Start Speed to around 9

c. Reduce the Start Size to around 0.02

d. Increase the Max Particles to around 3000

3. Enable and configure the Emission

a. Increase the Rate over Time to around 500

4. Enable and configure the Shape

a. Change the Shape to a Cone

b. Decrease the Radius to 0.1

c. Adjust the Position and Rotation so the cone is opening towards the ground

5. Configure the Renderer

a. Change the Type to Stretched Billboard

b. Decrease the Speed Scale to 0.1

c. Increase the Length Scale to around 10

d. Change the Material to WaterDropSmall

e. Change the Sort Mode to ByDistance

6. Apply the Vertex Systems

a. In the Material inspector click Apply to Systems to setup the correct custom vertex streams

7. You should have a stream that looks like the following:

Nice job! By completing this challenge you have learned the basics of the Particle Systems in Unity. These steps provide a foundation for most Particle Systems you will want to build. Feel free to explore the Examples scene to gain inspiration and create more Particle Systems