If you invent the HoloDeck I'll make you a REAL 3d fire.
Until then I'm afraid you're stuck with faking it.
Like this:
A combination of 3 different particle effects and manipulation of 3 dynamic lights.
We need some fancy new particle shaders to improve the effect, I'm trying to learn how to accomplish that but it's a steep learning curve at present.
Been there, done that, got all the T-Shirts!
