Inspired by Cake Defense, I have made something similar, using the advantage of mob spawn-able dispensers. There are a total of 99 waves. As you progress, the waves will become more stronger. Each 10 waves, the spawning time is different, in other words, MORE mobs! In addition, every 5 waves 1-4 doors will open, depending on how many players are currently in the game. If you were perhaps a knight and your friend was a Chef, The Knight and Chef door will open. Which will give you random goodies like enhancement table, armor, bow, and ect. To start the wave, you must push the button placed on the golden block, which will play a "ding-dong" sound. Mobs will start pouring down from the golden pipes above. The goal currently is to go to wave 99!!!(IMPOSSIBLE!!!)