TF2 beta muzzle flash

I came across these beautiful cartoon style muzzle flash effects in tf2, I believe they are a mod.

I was just wondering if anyone might be able to tell me how these muzzle flash effects were created, what method/technology was used?

They don’t seem to be sprites, considering how they look from different angles, here’s an example and you’ll find lot’s more with an internet search for ‘tf2 muzzle flash beta’

Just curious :wink:

Pretty sure it’s an unlit mesh drawing back faces of nested geometry.

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Made in Adobe Photoshop (i believe)

Also you can do photoshop actions in the particle shader code during runtime. The result will be same
Photoshop = Offline / Optimized solution
Shader = Runtime / Non-Optimized solution

Quickly tried this out in maya, seems to do the trick! Thanks!