2, is more like somebody sets up a location you can enter, like the yellowjacket. Somebody can use stealth to try and scare some people, if the admins will allow it, the host can get a skin from a horror game such as a amnesia grunt. And Detectives or Players can find out about the mysteries. Maybe an admin can host one so they can vanish. For example. Following somebody through the building, then quickly hiding/vanishing. 3. is more of a npc thing, npcs can be undead and attack like zombies, which would be kinda easy to set up. To elaborate more, there can be an evacuation that the cops help conduct. And they are like riot-control for the zombies. EMT can help those injured by the undead, and are like field medics. Fire Men can put out any fires causes by the chaos. And the rest fend for themselves just like an actual zombie apocalypse. This is almost the same as zombieoutbreak. Which was seen within Vincent's Comment.