Back in the old days, you needed to know the black arts of graphics programming to make even a wisp of smoke.
Thankfully, Unity makes creating particle systems quite simple.
Particles effects are like salt; just a small amount can add extra “pizzazz” to whatever you’re cooking up.
Modern games that don’t use particle effects in some manner feel can quite bland. They can be the foundation of a roaring campfire, or the luminous effects of a wizard’s spells.
:] Open up the scene in from your Project Window and run the scene: There’s not much going on at the moment.