I'm going to list some serves that use very fun plugins.Paintball server MCBall ip: mcball.net
Capture the Flag server Capture the Flag ip: mcctf.com
COD Nazi Zombies COD MC Nazi Zombies ip: zombies.pu-mc.com
War (with guns) The War a.mc-war.com

Now I'm going to list some more of the survival type servers.
Faction server Minecraft Factions ip: Server.MinecraftFactions.net
Aus survival server MCAU ip: mcau.org
Faction server Endersouls pvp.endersouls.com
True survival Snapcraft mc.snapcraft.net

I can't take credit for any of these servers of which I didn't make them.