I made this for my 6-yr old's birthday party. I used ideas from serveral different Mario Bros cakes on CC (thank you all). I was short on time so I kept it pretty basic. 10", 8" 6" cakes. My kids helped make the little figures. All was fondant expect for the gumpaste stars. Two layers were Cookies n Cream with Cookies n Cream marshmallow filling. One layer was chocoalte with chocolate buttercream. All very kid friendly. Hardly had any leftovers for a party of 20 kids and 15 adults.