Particle

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Particles are dynamicly controlled images which attempt to form a specific effect, such as an explosion, sparks, or glittery magic. Particles can be extremely defined to compose any effect you can imagine, as why almost every game on the market uses particles to enhance their gameplay.

[edit] Blending

Blend modes are commonly applied to particles. For example, "lightsource" particles usually use an additive blend to make them look as if glowing, but dull effects such smoke and blood shouldn't.

[edit] Emitters

Particles are produced from emitters, which can cover specified areas - usually in an ellispe shape. The emitter defines where each and every particle may begin it's life, and is often essential to create the desired effect.