The orange button gives the wood upgrader which costs 100 cakes. To get cakes, click the cake. The green button without text is the stone upgrader. The rectangular blue button gives you the iron upgrader. The gray button gives the platinum upgrader. The oval-like blue button gives the pearl upgrader. The green button on the left side gives the diamond upgrader. Each upgrader gives a certain amount of Cakes Per Second. Look in the code to see how much.
