Fireball help?

I’m making a pong clone, and i want the ball to be on fire.
When I try it myself, it gives weird results.
What’s the most realistic way to create a fireball?

Try using particle systems

I did the same thing with canon fireball. I Created Sphere as a Cannon ball and then attached 2 Particle systems as a Child of sphere one for fire and other little bit longer for smoke.

Did you try Unchecking Simulate in Worldspace in your Particle System ?