I was developing a 2d game. I have 8 maps. Maps are made from "wall" gameObject (I duplicated or copied them, yeah that was bad idea, and it's my first big, normal project). Now I need to change all of these "wall" component settings. I though I could make a prefab, so it would be easier later. Picture how my hierarchy looks like and what I need to change.
What I really want to do is to add 3DCollider to 2D "walls" so my particles would collide. Any help appreciated.