Earth + Earth = Mountain
Mountain + Earth = Volcano
Volcano + Water = Lava
Water + Earth = Mud
Mud + Fire = Brick
Brick + Brick = Wall
Wall + Wall = House
House + House = Village
Village + Village = City
City + City = Country
Country + Country = World
World + Fire = Sun
Sun + Water = Rainbow
Rainbow + Rainbow = Prism
Prism + Earth = Crystal
Crystal + Fire = Glass
Glass + Brick = Window
Window + House = Minecraft