What's that zombie gamemode called?

[yottabyte]

Good evening. I'm just really curious what this gamemode is called. I remember playing it a lot when I joined Gmod this christmas.

So the gamemode is basically zombies (npc) trying to attack your base, which is a gravestone (there is multiple gravestones at some maps). You can buy weapons and stuff from money that you get by killing zombies and the map changes every round. In the start you can build fences and stuff to walk on when shooting zombies and protect your base with. So anyone know what the gamemode is called? Are there still any servers online? I'd really like to play it. :)

Thanks

[{ABK}AbbySciuto]

Perhaps Zombie Outbreak?

[yottabyte]

[QUOTE={ABK}AbbySciuto;24216047]Perhaps Zombie Outbreak?[/QUOTE]

Im pretty sure that's it! Thanks! Too bad I can't find any servers though... :/