Ok, firstly sorry if this has already been mentioned, but i'm after a good horde mod for my server, i see a load of servers mentioning they have zombies, and hordes. But how can they do this? I've trawled through the mods section and don't see any old BOT mod anymore or zombie mods? 

Many thanks all

It's not from uMod.
https://lmgtfy.com/?q=Rust+ZombieHorde&iie=1

That link looked a bit dodgy, just started going to different windows etc..