You call it challenges or something along those lines were there are different games with different challenges on them for e.g in skywars you would get 3 chest with only one item in them all this would make it more challenging for players to kill one and other also in eggwars you could have a INSANE MODE were all your prices are over the top e.g 2 sand stone blocks = 21 iron or something to make the game more harder and longer to play.