Unity particles are randomly assigned to the material

Using Texturepacker will need to make a material image into an atlas, look (must be horizontal, etc.):

Made of material,

Creative several empty gameobject, add particle system components, and tick the following two items:

1 of 0-3 is the number of pictures in the picture set, from a few to several. If you write 0-1, then the image after index 1 will not be assigned.

2 places the material that was created just now.

Unity particles are randomly assigned to the material