Excel is a game where there is a castle and spawners IN the ground on the outsides of the castle. The point of it is to defend the castle for 5 Minecraft days. The Spawners Required are: Zombie, Creeper, Skeleton, and Enderman, if the castle takes enough damage, you lose, if anyone dies, you lose (to make it a bit more easy, put chests with food, farming tools, and enough equipment to last days.