Answer by belvita

when the player clicks on the object the object is plane very thin like in 6nmBj.jpg file then when the player clicks on it u can do: transform.localScale += Vector3(0,0,0.1); increase the scale of the object slowly through the z axis which will make it 3D but of course this does the entire object 3d if u want the player choose specific points vertices then this is a lot of coding