samuraidan no, I want the explosiveness. it's supposed to all go off at once like a big bomb
Like this?
The problem with the previous version is the Animation > Speed. It was 5. This means the animation will go 5 times during the Particles lifetime. But you also have to mark CanvasItemMaterial > Particles anim loop, or it will be stuck as it happened to you (gladly this is explained in the inspector contextual popup, but only in the Max field):
I recommend putting this to 1 and adjusting the Particle's lifetime to your taste.
Then if you want the Particles to keep emitting but make a stop between emissions I would add an extra frame to the animation which is empty. (or many two, depending on how big a pause I want)
Another option is to mark the Time > One Shot and trigger the particles by code in the intervals you want.
As a personal touch, I would put Time > Explosiveness to 0.8 or something like this. So there is a small spread in the particle emission, and not all are emitted at the exact time.
