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I've created texture which could represent a lightning orb. Is it possible to animate scaling of the texture to simulate this lighting burst? Like the orb is growing and than fades away.

Or do I need to make sequence of similar images and then animate it as particle system in Unity?

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    \$\begingroup\$ You're aware of the "size over lifetime" particle system component? \$\endgroup\$
    – DMGregory ♦
    Commented Oct 10, 2016 at 1:54
  • \$\begingroup\$ Yes, is it possible to randomize the rotation along with this value ? \$\endgroup\$
    – Wildfire
    Commented Oct 11, 2016 at 13:44
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    \$\begingroup\$ You're aware of the "start rotation" → "random between two constants" setting? \$\endgroup\$
    – DMGregory ♦
    Commented Oct 11, 2016 at 13:46

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As Dan said, your looking for the size over lifetime, and the color over lifetime can control opacity. Just keep tweeking the particle system, even if its just one particle

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