Haha, yea. I've been using the same menu template for all my jam games for like... 5 years now. I originally the left the Quit Game button in there from when i used to do desktop builds. I've just been too lazy remove it. :-D
And yes, this is 100% 3D. Using libGDX's basic 3d api. The only things that are not 3D are the text boxes that pop up, the hearts and the Knight sprite. Those are in a separate scene2D stage and viewport.