I would like to make a puzzle game where the character needs to switch form the material to spiritual planes and vice-versa to reach the next level, also, when the character goes to spiritual plane, i would like that the camera makes an lighten and add a little ghost-style for the graphics. But, before i make all the work, i would like to know if this is possible.

for the camera effect there should be a "mode" like the one used to make skinMeshes look different, but that ghost effect is too transparent...