How do I make some particles in photoshop for my particle system? I would like some bubble, circle, cloud, triangle, and spark-like/star-like particles. Can anyone tell me how to make some in photoshop or point me to a place where i can help myself? I want to make the shape on a black blackground(transparent) of size 64x64 pixels. Thanks in advance.

since you draw them additivly (ussually), just draw them using grayscale. just like you say. lighter shades of gray are more opaque. you can color the particles in engine using vertex colors, but you already know this since you already konw what to do. since you actually said what you need to do. what seems to be the problem? please be more specific.

I just dont know how to make them in photoshop. I cant find any tutorials on making bubbles or "sparks".