I made this cake for my son's birthday, the donkey kong barrel is two 6"x3" round and one 5"x2" round cakes, slightly carved to get that contoured look, covered in fondant. bottom tier is 9" round covered in fondant with buttercream detail. the road is fondant, as well as the turtles, stars, bananas, and mushrooms. everything else are toys... I know I could've made the characters out of fondant, but my son really enjoys playing with the toys, and it was faster for me, since I did this cake, and a cake for my daughter in the same night.