MMO Type Server?

RPG factions is pretty sick, it has custom levellling system with ce

i used to play in dungeon realms, i don't know if it's still open but go there that if it's open it's totally worh it, it's not just a simple rpg it has much more things do with

wynncraft is my fav server in this type of gamemode

An MMO server would be a very good idea. Do not hesitate to do so

For a zombie survival feel Id recommend looking into MineZ
http://minecraft-mp.com/type/minez/