Everything is simple. All the players can do anything, but there are some rules as to what not to do or else. You can Raid/Grief/Kill. But there are some players that do not apply to those rules. You can buy protection so you will not be bothered by others. You can make factions, Parties, groups and stuff. There's mcMMO, travel-pads, silk touch spawners, Chest locking, and Jobs.

Rule #1 No Hacks/Mods (Some are allowed)/Duplicate Glitches
Rule #2 No Major Grieving
Rule #3 No asking for anything. Promotions, Items/Blocks, Day/Night
Rule #4 Do not Impersonate anyone,
Rule #5 If I catch you breaking one of these rules, you'll be sorry. I will stalk you for months.

thhdms.enjin.com

I'm in need of a new OP, so if you'd like to apply, you may.