unity particle should collide with each other

It’s not possible with the built-in settings, but it is possible if you write it using script.
I prototyped this exact feature to demonstrate our C# Job System support for the Particle System:
Particle System C# Job System support (see the second post, with the example project)

It requires Unity 2019.3, and, it’s far from perfect, as it’s just an example. But maybe it helps you :slight_smile:

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