Usage
During testing, it is useful to have the Looping property switched on so you can see the explosion repeatedly but in the finished game, you should switch this off so the explosion happens only once. When the explosion is designed for an object that has the potential to explode (a fuel tank, say) you might want to add the Particle System component to the object with the Play On Awakeproperty disabled. You can then set off the explosion from a script as necessary.