So you go in an arena like a pvp type place. in the arena there are a ton of zombie spawners, it is also always dark or night time. the objective is to get from start to finish and the farther you go the harder it gets. If you reach the end you and whoever is with you all get 150 noobz or some prize. i did this on my freinds server. He spawned zombies while me and two other buddies killed zombies in an NPC village and it was actually very fun.



~Mr_Dr_Ry