 So you want to fill your scene with floating embers, not a problem. Right click Niagara system, hanging particle, plus, finish, name it, drag it in, open it, then set SIM target to GPU and fix bounds to help performance. Now the size of the area the particles take up is controlled under the shape location module. It defaults to 400, but you can make it however big you need. Under initialize particle, I like to change the min and max lifetimes to something a little more dynamic. So one and seven are pretty cool in my opinion. If you're doing fire embers, you probably want to give it a reddish orange glow. And just so the particles aren't all exactly the same size and shape, change size mode from random uniform to random non uniform. A cool looking range would be one to 10. Now you can see they're all random shapes and sizes. And under wind force, you can decide how windy the particles look like they're being blown around the higher the value, the more movement you will see. And it's also helpful to adjust the min and max drag so the particles don't all move at the exact same speed in the wind. And lastly, if you have your own sprite that you would like to use, you can of course set it under the rendered material. It's slight, but a simple sprite goes a very long way for this kind of effect. Anyway, hope that helps and as always, hope you have a fantastic day and I'll see you around.