Thank you so much for giving Spark Rush a try. I am so happy to read you enjoy the expanding spark pattern. This was created by using some open source 2D code that i converted into a 3D arrangement. if you would like to explore how some of it functions in a more beautiful way i have a jellyfish simulator that is more relaxing. But i will admit i found it very difficult to get absolute control over my game object spawner for the power sparks and even those jellyfish. They will have movements that i did not plan for, and i could only incorporate one spawner and it would always be at 0,0,0 transform. Spark Rush is open source if you have Unity C# experience more than welcome to look into the code. Hope this information helps.