I'm of the opinion that the 'true to life' way the zombies act now is pretty much how a 'true to life' game like this should do things not scripting attacks etc. Yep obviously I wanna cower down in my base whilst zombies try to break in but I believe that once the NPC's bed in, they will drag zombies around after them and we will get the hoards we desire. I've been spanking the zombie genre on kindle and must be up to 30+ books read, in a lot of these the 'Raiders' drag a hoard to attack the bases of the good guys, maybe a tactic for evil raider NPC's. I'm well up for the NPC's. Wonder if were friendly when we can get them to do stuff for us, possible difficult to program??? How about how State of Decay does it, if you are friendly enough with an NPC then you can switch over to that character then switch to yourself as an when you need them to do something. I'm sure the devs can come up with a good system but whilst I'm mulling it through, it seems a tough one. That's two or three topics in one post!!