Yesterday just tried a world with no zombies and extremelly high amount of NPC, 20% of them hostile and raiders on. My pc is not liking it but I do. The performance rises another topic which is "is this engine ready to handle so many entities?" zooming out and driving with many zombies around is already affecting the performance but no zombies and many npc does indeed impact higher, with an ocational half a second freeze.

Back to this experiment I noted that hostile npc show their name in red and non hostile npc consider them as enemy because they attack him on sight, including your members. Some behaviors are strange, they seem pretty dumb to find food. I've seen many say "there is no food here" and then find fresh food on the fridge and freezer, not to mention cans with a can opener next to it.

I learned is not easy to fight because the the turning speed and NPC sprint and finding a watch and car keys became a quest. I've just tried some hours and so far it's interesting