[Allen joaquin] "But i just can't figure out how to randomly make them appear and fade in and out."
Ok, now I understand.
Use a sphere or box emitter instead of a point emitter, and make it nice and large. This will allow your particles to appear across the screen instead of emitting from a single point in space.
For the particles themselves, adjust the Opacity over Life setting, and choose the graph that smoothly ramps up then back down (or draw your own).
Walter Soyka
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