A hoop skirt won't layer, but you can put petticoats over it. However, the problem with a lot of pre-made hoop skirts is that they are not very strong and will collapse under too much weight - someone in another thread unfortunately ran into this with only one layer of only a moderately heavy fabric !
I would make it myself or commission it. It looks like kind of a weird shape - there's a lot of volume on the hips and still in the butt area. The screen-shot of the actual game looks like it's flatter ?
I'd probably go with an elliptical crinoline with extra ruffles or pads on the hips or more of a pannier system (like this
depending on how I wanted the game art to come alive.