Vulnerable Civilians

Some video games have Invulnerable Civilians, where not only can the player not harm innocents, but neither can enemies.

Others have Vulnerable Civilians. Some games, like the infamous Grand Theft Auto series, allow the player to go on a killing spree and cause all the chaos they want, but some put the NPCs directly in harm's way. These are Vulnerable Civilians, the people whose lives are at risk from the dangers of the game world itself.


 * Done in very strange ways in X-COM: Enemy Unknown: During terror missions, the aliens would often ignore your soldiers for the chance to kill a civilian, if they had to choose. And Fridge Logic rears its ugly head when you realize the aliens had hours to themselves from when you were alerted of the mission to your actual arrival on scene, and apparently waited for you to show up before starting the civvie killing. Psychological warfare?
 * Done in Final Fantasy XII when you're in areas where you can actually fight monsters. The NPCs (who generally tend to be adventurers themselves) can and do get into fights with monsters all on their own, while monsters will even pick fights with each other as predatory animals are wont to do in Real Life.
 * Used in The Saboteur. The Nazi soldiers occupying Paris gladly abuse and execute civilians, often just for the hell of it. It gets sadistic (as expected of the Nazis) when German soldiers pass civilians on the street and proceed punch them and beat them up for no real reason other than that they can. And if the civilians fight back, or are simply witnesses to the abuse, they get shot down as they attempt to run away, or get arrested and sent to some unspeakable fate.
 * Used in Prototype. The zombies of the zombie apocalypse will happily chow down on the hapless citizens of New York City. And you can kill them yourself, if you want to.
 * In Crackdown, jaywalking civilians can repeatedly get up after being struck by a car at high speed, provided that the driver is another civilian. However, they're very vulnerable in other ways - freaks specifically target civilians, for example.
 * Mostly played straight in Deus Ex -- the New York, Paris and Hong Kong levels are all full of NPCs, and just about all of them can be hurt or killed... except for some plot-dependent characters such as Paul Denton and Walton Simons, who are invulnerable until the game decides otherwise.
 * The invulnerabillity of the Goldeneye 64 civilians depends on the difficulty levels. Turning them from meat shields into bullet sponges... which the military doesn't seem to care about either way. Of course, hiding behind them is fine... but rolling them over in a tank is not. Eventually.
 * Used in the Superman Returns games....in fact, it's rather the entire point. YOU are pretty much invulnerable (the worst anything can do is stun you), but instead the city has a life bar when it takes damage and/or citizens get hurt. If it gets emptied, then it's game over. Nice touch of realism, but sadly it pretty much turns the entire game into one long Escort Mission.
 * Averted with the kittens, which are unharmed by all of Superman's attacks.
 * Fallout 3 uses a system similar to The Elder Scrolls IV: Oblivion, where the smaller, open-area towns like Big Town, Canterbury Commons, Arefu, or Republic of Dave were occasionally subject to random monster attacks, which can result in the death of quest-related NPCs. In fact, monsters would sometimes spawn right inside the town itself. At higher levels, this would often involve Yao Guai or Deathclaws, resulting in the death of everyone inside the town. Additionally, there are a number of named NPCs (most notably the merchant caravans) that roam the wasteland and are likely to be eventually eaten by monsters.
 * Most Fallout 3 NPCs central to morality-type quests cannot be killed, only knocked unconscious. For example, the NPC will start following your character around when her morality-type quest is activated, meaning she can turn up almost anywhere in an invulnerable state (as I discovered when accidentally  her, assuming she was an attacker). These same NPCs often lose their invulnerability right after giving you the quest-specific message.
 * All of the child NPCs in Fallout 3 (those who aren't killed by scripted effects) are completely invulnerable.
 * In previous Fallout titles, any human can be killed: shopkeepers, random civilians, even children. Killing children makes everyone hate you and can even draw bounty hunters after you. Also, killing people in your hometown can trigger a Nonstandard Game Over. Unlike Fallout 3, however, towns were never subject to random monster attacks.
 * Fallout: New Vegas fixes the monster spawning locations so that monsters no longer randomly spawn right in the middle of settlements. It's still possible for monsters to chase you into town and kill the residents, though.
 * Played straight in Ultima: Martian Dreams, where roaming monsters would attack and kill members of the Martian expedition if you left the doors to their houses open after visiting them. This made the game unwinnable, so you needed to remember to always close doors behind you to keep your buddies safe.
 * Done in STALKER, where every character (including major characters) could be killed, and most human settlements were subject to random mutant or bandit attacks. Thus, it was entirely possible for quests to become unobtainable as major characters were killed in random shootouts.
 * Used in the Crusader games. Friendly fire is in fact quite possible if there are enough enemies, and since there are civilians present in many dangerous areas of the game...
 * In Elder Scrolls IV: Oblivion, monsters never (well, hardly ever) invade towns in order to kill civilians, however bodies of several dead travelers are seen, as are travelers in the process of being attacked.
 * While monsters never invade the major walled towns, I have seen them attacking some of the smaller farmsteads and settlements. This usually occurs when a monster is traveling along the main road, and happens to spot an NPC working on their farm. Additionally, some NPCs commute between cities, leaving them open to monster attack while traveling on the main road.
 * Additionally, all NPCs in Oblivion (except for patrolling imperial guards) are unique individuals (many of whom give sidequests) rather than randomly spawned characters. Each NPC killed randomly by monsters is one less person in the game world, who will not be replaced, and if they were part of a sidequest, their deaths make that quest unfinishable.
 * Thus sparking the great debate: is it cheating to use the console to set the invincibility flag, protecting NPCs from their own stupidity for the sake of keeping the world a little more lively?
 * The death of a NPC does not always make a sidequest unfinishable. If you accept a sidequest to kill a NPC before the NPC dies, once the NPC dies you will be credited with performing the kill, even if a wolf or bandit killed the NPC instead of you.
 * Some of the time, an Oblivion NPC who needs you to guide him or her somewhere becomes invulnerable during the course of the trip. For example,, so you could use him as an invulnerable sidekick for quite a lot of the side quests. When doing the Main Quest, the are invulnerable until you  , making them useful in the Main Quest section  as additional soldiers.
 * In Command & Conquer, civilians are very weak and can get squished if they get in the way of a tank rush or the like.
 * There are a few Guild Wars missions and quests where different types of civilian NPCs get attacked by monsters. They generally do very little damage and die quickly, with attack animations resembling punches and hits.
 * Starcraft has a number of "civilian" and "scientist" units in some of the missions that are considered non-neutral units. They cannot attack at all, and have somewhat lower hit points than terran infantry units.
 * In World of Warcraft, some mobs will attack critters (small creatures that won't battle and have very little HP like rabbits, etc). The game keeps most NPCs and mobs seperate by design (apart from the odd Escort Mission) though.
 * Scarface the World Is Yours is a mixed bag. Tony Montana won't shoot the innocent. His (playable) employees can murder whomever they wish to. With the exception of some plot relevant characters such as the bank teller.
 * Goldeneye for the N64. To such a point that using them as a meat shields becomes a viable survival tactic.
 * The Fire Emblem series uses this from time to time. Most notably in the Jugdral games, which prominently featured a demonic cult that hunted down and sacrificed children. Interestingly, saving a civilian resulted in an automatic level-up in Genealogy of the Holy War.