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1* It's been found that the AI in ''VideoGame/AliensColonialMarines'' flat-out didn't work as intended due to a coding error (a single misspelling of a "tether" command, written as "teather"), and man, did it ever show. Any tactic beyond "run at player and attack" was beyond the Xenomorphs, and frequently they ran into walls. AI teammates aren't much better, as [[WebVideo/TheAngryJoeShow Angry Joe]] demonstrates in [[https://www.youtube.com/watch?v=UGX2WE4QUw8 his review]]. O'Neil, especially, is prone to either standing around doing nothing rather than firing his smart gun, or getting in the way when you need to do something. Patching this particular error causes the AI to work as intended, making the Xenomorphs use much more intelligent tactics (flanking, ambushes, etc.).
2* While the ''{{VideoGame/Arma}}'' series' AI is sometimes more infamous for things like aimbot accuracy or sinking into the ground at distances where foliage should be making them harder to see, they at times veer between ArtificialBrilliance and this trope, with one particularly galling example in ''Arma 3'' being the infantry AI's tendency if left on combat mode to fight where they stand (or kneel or lay) well after you told them to maneuver or fall back, or launcher-armed guys continuing to use their rifles or machine guns when they should be letting off missiles or rockets or grenades at enemy vehicles... and then there's [[DrivesLikeCrazy what passes for their driving]]!
3* ''VideoGame/Battlefield1942'':
4** Desert Combat, a popular mod, rolled two of the original game's classes (medic and engineer) into one class, without updating the AI. This could be problematic when playing with bots. If the player's tank was injured, a helpful support-class bot would run up and begin covering the tank with anti-tank mines. If the tank moved an inch (and sometimes if it didn't), it would go up like a Roman candle. It gets worse, though. When the player's tank is hurt, the AI almost always spawns as support. Thirty seconds after the player was first trapped by his tank's thin coating of anti-tank mines, twenty more support bots would run up to festoon the tank further. When the mines ran out, the bots would pull out shotguns. When the shells ran out, they would melee it. A crowd of twenty bots, rhythmically beating a tank covered in landmines. The only bright side was that when you eventually did move, you'd take all those idiots with you.
5** This was just one of a number of AI screw-ups in the game. The most prominent was when the AI — which was never programmed to fly a helicopter — tried to fly a helicopter. They would often fly straight up into the air as high as they could and then attempt to turn. Soon after, the helicopter would inevitably crash into the ground, often upside down. Any attempt at recovery looked like a drunk, epileptic three-year-old was at the stick, and God help you if you were within 100 feet of it, because there was a good chance it would plow into you while dragging sideways along the ground.
6* ''Bioshock'':
7** ''VideoGame/BioShock1'''s main issue was that Big Daddies can be aggro'd by damage, even if you weren't the one who caused said damage. This includes: Trap bolts set for splicers, electrical shocks emitted by Static Discharge, and turrets and bots that you've hacked.
8** ''VideoGame/BioShockInfinite'' has some issues regarding traps. Once you [[spoiler:go through a tear into an alternate reality where you became a hero of the Vox Populi]], the Vox become your allies. However, they can set off any traps you plant, including crow traps created by enemies you throw crows at, and if one of them does, any others in the room will turn on you. [[spoiler:Fortunately, this at least doesn't last long until their leader — who watched the Booker [=DeWitt=] from this world die — mistakes you for an imposter and officially makes an enemy of you.]]
9* Your squad in ''VideoGame/BrothersInArms'' tends to stand in the open a few feet from cover unless prompted to move, apparently preferring to let jerries ventilate them.
10* ''VideoGame/{{Borderlands}}'':
11** Psychos in ''VideoGame/{{Borderlands}}'' will often pull out and arm a grenade when low on health, charging at players. They will even do so if there's no way that they'll actually reach the players before the grenade goes off. In all fairness, they ''are'' [[AxCrazy insane and violent]].
12*** ''Borderlands'' also has randomly generated weapons, many of which [[https://www.awkwardzombie.com/comic/beyond-the-scope-of-design leave players asking]] (in the words of ''WebComic/AwkwardZombie''):
13---->'''WHO WOULD DO THIS'''
14** In ''VideoGame/{{Borderlands 2}}'', during a mission with an escort (such as the Slab King escort quest around level 20), if you are in Fight for your Life (meaning you're crippled, but you can get back up if you kill an enemy), the escort NPC is likely to continue killing mobs you might be aiming at, and even more likely to [[KillSteal steal your kill]] and leave you for dead... then yell at you for dying afterwards.
15*** Lynchwood has train tracks running through the center of the town there. Enemies will hop down from the embankments onto the tracks and back up to try and outflank the player. They will do this even if there's an oncoming train, which is a OneHitKill to anything for self-explanatory reasons. It's not uncommon to lose count of how many enemies you've killed and come up short, only to discover one to five twisted, pathetic bandit corpses mangled on the tracks after the fighting dies down.
16*** In the ''Tiny Tina's Assault on Dragon Keep'' DLC, it's possible for [[ThatOneBoss the Duke of Ork]] to either get stuck behind a fence in the Forest, or ''fall down an endless drop'' in the Mines of Avarice.
17** ''VideoGame/Borderlands3'' has numerous moments where you team up with an AI partner. They're effectively immortal, but can be downed temporarily (and will return to their feet quicker if you revive them). They can also revive ''you'', so logically the best course of action is to stick close to them so they can save your butt if you're dying... on paper it is. In reality, if ''anything'' shoots them during their revival attempt, they will immediately reset their revival, or disengage from helping you entirely until the target dies. The AI also makes zero attempts to move while reviving you, or to put itself behind cover (heck, it won't even crouch to reduce its size), so it's best to aim for second winds.
18* The ''VideoGame/CallOfDuty'' series has had its occasional hiccups, but the ''[[VideoGame/CallOfDutyBlackOps Black Ops]]'' games probably have the most noticeable instances.
19** The worst of the series has to be ''[[VideoGame/CallOfDutyBlackOpsII Black Ops Declassified]]'' for the Platform/PlayStationVita. In just one example, enemies will take cover behind explosive objects, [[ExplosiveStupidity then attempt to shoot through them]].
20** The Combat Training AI is notable for its consistent application of this. They will walk right past enemies without a second thought, even after one of them (always whichever one isn't on the player's team) realizes what just happened, turns around, and murders the other. They have a difficult time changing tactics, or targets, or even working together; they will often break off from the rest of their team and opt for a knife kill on an enemy who is far out of range, even if that enemy or another one is actively aiming at and shooting them — and for good measure, every time they survive long enough to get into range, they promptly forget they even ''have'' the knife and just stare at their target until he realizes they're there and knifes them. When they do remember they have a gun, they still spend ten infuriating seconds simply ''staring'' at their target before they remember what they're supposed to pull to actually fire at it (though in the enemy's case, they make up for this by [[TheComputerIsACheatingBastard sighting in on you through half the map, waiting until you actually pop your head out into the open]]). [[FromBadToWorse And then that AI, with almost no upgrades, is used for the allied AI in the second game's Strike Force missions]] — now you get to deal with all that with the added bonus of constant insubordination, as your entire team hides behind a wall and ignores your repeated orders to move forward and cover you, forcing you to do everything.
21* The enemy AI in ''VideoGame/CliveBarkersJericho'' is very, very stupid. They generally do nothing more than charge you, and while for some enemies, this is actually a good way to take out the Squad, for most, it results in them dying before they get anywhere near you. The allied AI is also quite dim, as they don't quite understand the concepts of "retreating" or "taking cover" and will often melee the exploding enemies or dash up to enemies with ranged attacks and get slaughtered. Luckily, their death does not mean a game over unless everyone, including you, dies.
22* ''VideoGame/ConkersBadFurDay'' has multiplayer AI that, although justifiably stupid on the lowest difficulty level ("Inbred"), can sometimes become this even on the highest level ("Einstein") due to the lack of [[FriendlyFireproof friendly fire protection]]. Specific examples include:
23** Sometimes they fail to check what's immediately in front of them before opening fire, such as firing at you because the enemy was directly behind you, as if they expected the bullets to fly through you into them.
24** Other times, they'll shoot any and every friggin' thing that moves, including you (common when armed with sniper rifles and grenade launchers).
25** When they're not shooting each other in the back, AIs, friend and foe alike, will stand around doing nothing besides, perhaps, jumping, or trapping themselves in a corner until you shoot or kill them (this tends to be more common the less AIs you have running around on the map). All of these behaviors are often conveniently out of your line of sight just to give the illusion that they're off doing something important.
26** Depending on the mini-game, the AIs will also be focused more on shooting (with actually ''aiming'' [[ATeamFiring being an afterthought]]) than the goal they're supposed to accomplish, such as how the weasels in Heist will focus more on killing each other than stealing the money bags, and the only time the money matters is by making whoever's holding it Public Enemy Number 1, or how War!Colors will have the troops more focused on sniping at each other than either side bothering to grab each other's flags. On the other hand, it works in your favor at times; your foes are no smarter than your own teammates, and can even commit [[TooDumbToLive stupicide]] trying to kill you. A common scenario involves you being in an area where you're invulnerable (or not entirely in range of an attack), leading to your foe, armed with a grenade launcher or bomb, trying to fire at you, [[HoistByHisOwnPetard only to obliterate themselves by being too close to their own blast]]. This will, at worst, knock you up into the air and stun you for a while.
27* ''VideoGame/{{Crysis}}'':
28** The enemy soldiers are completely unable to deal with your cloaking device, making it a GameBreaker. You can uncloak, shoot an enemy in the head, and recloak, and all the enemy's buddies will just stare blankly at the spot you were standing just a few seconds ago. The expansion pack ''Crysis Warhead'' fixes this by making the A.I. fire blindly and/or throw grenades at your last known position, although you can still [[LeetSpeak pwn]] everything in the game by simply moving a few feet to the left after recloaking.
29** In some situations, enemies will outright ignore you, even if you stand right in front of them (like they were unable to change their plans in the mid of getting somewhere). Truck and boat pilots will outright ignore you even if you hop on their head. Enemies will sometimes kill themselves eg. by running to the middle of a minefield or drowning themselves. If two enemies are talking to each other, you can sometimes sneakily kill one from the distance, and the other will be blissfully ignorant about anything and keep going on like nothing had happened.
30* ''VideoGame/DaemonSummoner'' (a poorly-received FPS known for being glitchy-as-hell) have it's share of issues, but the worse of the lot is probably the AI-controlled vampire enemies having tendency to run into doorways and continue running in a fixed position, even as you pluck away their health via crossbow. It's as hilarious as it sounds when it happens.
31* The AI in the ''VideoGame/DarkForcesSaga'' is generally pretty good. Enemies will react intelligently, and while they're not so great at seeking cover, at least they know how to fire on the move. That's for enemies with ranged weapons, at least. Then there's the enemy Sith {{Mook}}s with lightsabers in the later games, starting with ''Jedi Outcast''. It's easy to lose count of how many times one of them, especially one of the [[ColorCodedForYourConvenience orange-suited bottom-tier]] mooks, does an 'evasive Force jump' to get away from you if you knock them down or use a Force power on them... only to go sailing into a BottomlessPit. The last part of the Vjun levels in ''Jedi Academy'' are notable for two specific cases of this. First is a cultist on a balcony you have to get up to in the throne room: he's supposed to wait for you up there and attack once you're there, but most of the time, he hears you as you enter the room and promptly breaks his legs trying to get to you early. Second are the twin Reborn Masters assisting the boss of the level — since they lack lightsabers, they can easily be killed with guns simply because neither they nor said boss will typically move from their starting positions until you walk closer.
32* The [=NPCs=] of ''VideoGame/{{Devastation}}'' behave downright poorly at times. They often get stuck running into walls. In combat they don't know any better than charge at their target. Your allies will often get in your way and the enemies have a tendency to aggro any Exploding Barrels they see.
33* ''Franchise/{{Doom}}'':
34** In ''VideoGame/{{Doom}}'' and ''VideoGame/DoomII'', the whole reason the Cyberdemon was given immunity to splash damage was because the simplified AI would likely damage itself accidentally by firing rockets into nearby obstacles.
35** The [[SetAMookToKillAMook in-fighting system]] in classic ''Doom'' and ''Doom II''. In this case, it's a deliberate bunch of clever programming rather than bad coding, with a number of rules determining how monsters are able to inflict damage on each other, and whether they'll retaliate. Also, as [[https://www.youtube.com/watch?v=2VzBaUW0I64&t=760s this video]] humorously demonstrates, if two monsters are in-fighting and one teleports into another part of the map, the unteleported monster will, rather than attack you, just idly move about searching for the teleported monster.
36** One case where it is bad coding, though, is an oversight: demons are coded to recognize attacks on ExplodingBarrels as attacks on them if they take damage, and will target whatever destroyed the barrel. In earlier versions of the game, this could lead to a demon accidentally attacking a barrel, taking some damage, and then registering ''itself'' as a target. This will lead to the demon killing itself with melee attacks.
37** Also from ''Doom'' and ''Doom II'', Pinkies will always charge straight at the player, regardless of what's in their way. Even if you have your chainsaw out, they'll happily charge right into it and get shredded.
38** In ''VideoGame/Doom3'', any monsters without a projectile attack (i.e. zombies, Pinkies, or Wraiths) had absolutely no idea what to do if the player jumped on a table out of their reach. So they'd just run in circles around the table while moaning their hearts out. Enemies ''with'' a projectile attack (i.e. Z-Sec or Imps), on the other hand, make the most basic mistake of stubbornly and relentlessly following you instead of finding a cover and waiting for you to enter the area you need to pass through in order to continue the game. This makes them very easy to dispatch -- just retreat behind the nearest corner, aim your gun at it and wait until the enemy inevitably walks right into your crosshair. Always works.
39** On [[HarderThanHard Nightmare!]] difficulty as well as with "fast monsters" enabled, projectile enemies will typically stand in place hurling fireballs at the player. While this can make them a nuisance, their static attacking also makes them an easier target for your own projectiles, such as rockets. As long as the monster sees you, they will let the rocket of doom heading right for them hit its mark.
40* The late-90's ''VideoGame/ExtremePaintbrawl'' budget games were the absolute king of this trope! [[WordOfGod The game's developers]] openly admitted that the game was shipped without any AI routines for your squadmates. So, at the beginning of a match in an enclosed arena, they would simply run into a wall and get stuck in it. Meanwhile, if you were playing in an open field, they would either flail about like they were having epileptic seizures, or bend down and crawl back and forth.
41* ''Franchise/FarCry'':
42** ''Vengeance'' has some pretty bad enemy AI. You can run up behind them making lots of noise and they won't hear you. You can stand right in front of them and let them shoot you and their accuracy is so bad that it takes a long time for them to inflict enough damage to kill you. You can even THROW GRENADES AT THEIR BACK and they won't turn around.
43** In the [[VideoGame/FarCry1 original game]], if you somehow manage to lure a merc into the water, he'll just stand there, trying to fire his jammed gun ([[GoodBadBugs even if he's only knee-deep]]). You can keep throwing rocks at him until you get bored, and then leave him behind.
44** ''VideoGame/FarCry2'''s AI has some interesting ideas about turrets and vehicles. When two AI characters are in a boat or truck with a mounted gun, and you kill the gunner, the remaining AI will stay at the wheel and keep coming straight towards you (as if the gunner were still there) while ignoring cover, even though it is completely defenseless while doing so. In the rare case that it survives long enough to actually reach you, it often just sits there at the wheel and looks you straight in the eye, waiting to be killed. Conversely, shoot out the driver and the gunner, rather than continuing to take advantage of the power of his soon-to-be-stationary machine gun, will immediately hop into the driver's seat himself, ''then get out of the vehicle entirely'' to go after you with his much less effective personal weapons. In general, the AI is a good case study showing why combat drones [[RealLife IRL]] still have human pilots. Another thing the AI does is to run into fires and burn to death, even those it started itself (and it is very good at setting fires to kill itself — try sniping into an airfield when an assassination mission takes you to it and see what happens not five seconds after the AI takes cover in the hangar). It also tends to stand behind partial cover, then start shooting at you when it has a minuscule chance of hitting you. By the time it has completely emerged from cover, it will need to reload. While it reloads, it does not move.
45** The AI controlling the wild animals you sometimes see isn't too bright either. If you park a car in just the right way, a fleeing gazelle will charge headlong into it and collapse, dead, upon making good friends with the stationary bumper.
46** Another rather badly implemented AI quirk is that the competence of your allies and the enemies are equal, so on easy mode, you would have to work quite hard to save your buddies as they can't hit a barn, but on hard mode, your buddy will generally manage to massacre the entire ambush before you get to him.
47** The animals in ''VideoGame/FarCry3'' aren't particularly bright either. When non-predatory animals (like deer) get startled, they will run away in a random direction as fast as possible, including directly into nearby bodies of water. As soon as the water gets at least knee height on an animal, it will [[SuperDrowningSkills drown instantly.]]
48** In ''VideoGame/FarCry5'', computer-controlled allies seem completely incapable of figuring out how to move to avoid fire. Usually, the moment a fire starts they'll freeze in place shouting that the fire is spreading as it engulfs them, then die once they've been in it long enough, forcing you to either revive them or wait for them to respawn.
49* The ''[[VideoGame/FirstEncounterAssaultRecon F.E.A.R.]]'' series is generally very good when it comes to AI; however, they do make some cracking blunders, such as killing themselves with their own grenades and blowing themselves up by targeting [[ExplodingBarrels flammable barrels]].
50** One very common mistake (and often the only reason you're able to take them down on higher difficulty levels) is using cover from irregular-shaped objects or structures of the wrong size, which often leads to an entire squad of Replicas either with their bodies half-exposed or hitting their own cover while trying to shoot from their positions. And they don't always move when injured, meaning you can kill a Replica by gunning it from afar with the RPL, ''and he will not move to protect himself properly''. That's not to mention the fact that they don't take explosive props into account at all — a perfect strategy to deal with groups is to lure them into a place you've cleared and let a barrel/extinguisher/fuse box behind. When they come, shoot the prop. [[TotalPartyKill Instant squad kill.]] What makes this particularly weird is that they're programmed to recognize and react to grenades, and ''only'' grenades - landmines and remote bombs garner no reaction from them, even if you place them in full view of them.
51** One thing of note is that the AI makes dumber decisions as you lower the difficulty. Low-difficulty enemies have less accuracy and damage, which means they'll take stupid decisions like rushing into the bullet-time marksman wielding a shotgun.
52** Depending on the version, the AI sometimes has issues with transparent but bulletproof surfaces, and will occasionally waste bullets trying to shoot you through it rather than moving around to get an actually clear shot.
53** While the AI is very good at fighting the player, AI-versus-AI combat is a different matter entirely. If two AI factions are not specifically meant to fight one another in a level, they will ignore each other entirely if you manage to get them together; if they are, the fight will basically be a simple exchange of bullets — no taking cover, flanking, flushing out enemies with grenades, or any other mildly-intelligent tactic they can utilize against you — until either you make your presence known and [[GangUpOnTheHuman they all focus on you]], or one side (usually the Replica) gets enough bullets on-target to kill off the other.
54* In ''VideoGame/GhostReconAdvancedWarfighter'', support choppers will wander into enemy hot zones and get ventilated by AAA fire, your teammates will bum rush the enemy in attack mode, and [=NPCs=] wielding the rocket launcher tend to [[ExplosiveStupidity frag themselves]] on obstacles.
55* ''VideoGame/GoldenEye1997'':
56** The game has decent enemy AI. However, enemies will only shoot at you if they are on the same elevation as you or close to it, so if you are a bit too low to them or too far up, they will move closer to you in order to get a better shot, even though there is nothing blocking their line of fire. This also gets worse if you park yourself on a stairwell, since the AI will not even bother to shoot at you, even if you are less than a foot away. Because of this exploit, it can lead to an AntiClimaxBoss fight against Xenia, where you can shoot parallel to the bridge as she crosses it and she won't attack until she gets across the bridge, and you can kill her before that happens.
57** The way AI works in this game is this: If the CPU can walk in a straight line towards you, it can see and shoot you. The inverse is also true. This can work to your advantage or to the CPU's, depending on the situation. If you stand just behind a rail, you can shoot holes in him and he'll have to come around to get you, but if there's a big hill that you can't even see over, they can shoot right through it and hit you.
58** Another way in which they're stupid is if one comes after you, but doesn't see you after a few seconds, it will forget about you, stop chasing you and stand perfectly still indefinitely until you get his attention.
59** Yet another way, there are some [=CPUs=] that are programmed never to move unless they see you. This means if you stand somewhere he can't see you (like behind a rail), you can shoot him all you want and he'll be oblivious to your presence.
60* ''Franchise/{{Halo}}'':
61** The allied AI is infamous for being downright stupid at times: In ''VideoGame/HaloCombatEvolved'', they had no concept of stealth, making otherwise very easy rooms of sleeping grunts annoying when they ran with guns a-blazing, waking up the aliens. From ''VideoGame/{{Halo 2}}'' onward, they [[OhCrap learned how to drive]]. AI drivers will run you smack into walls (leaving you completely vulnerable to tank fire), or careen straight off cliffs, or ensure completely avoidable rollovers happen... and AI gunners aren't much better, as they seem to be attempting to conserve ammo on a turret with BottomlessMagazines. So on single-player campaign mode, you have to drive for yourself, get out of the car, then gun for yourself unless you want to stick around a single map for half an hour. This is exactly why the entire series has co-op campaign.
62** The dropships also seem to like dropping Warthogs on players sometimes. And, yes, we mean ''[[DeathFromAbove directly]]'' [[DeathFromAbove on top of players]]. It's quite infuriating.
63** [[https://www.youtube.com/watch?v=w6vzSlvq3z4 Consider this gameplay clip]] of killing two hunters in ''VideoGame/HaloCombatEvolved''. Both Hunters turn very slowly, while Master Chief repeatedly punches them in the exposed armor.
64** Despite the overall difficulty of ''Halo'' being [[NintendoHard quite high]], the AI tends to be pretty stupid, relying more on numbers, superior weaponry, infinite ammo, vehicles, high damage resilience, improbably high accuracy, and level design in their favor to serve as a threat. Many enemies will not react at all to getting shot if you are not within a specific range or attack them from an area the developers probably didn't consider when programming the game. Most enemies don't react when their allies die near them (Grunts tend to be the exception, but their response is to run around in panic). On the other hand, they are often devastating once you walk into the programmed scenario they are waiting for.
65** Even ''VideoGame/HaloReach'' has this in spades. Allies will still blow themselves up if given the rocket launcher, stand still right under enemy dropships, and charge straight at Hunters. The ODST "Bullfrogs" in the mission "Exodus" will even jump right off cliffs to their death. Certain enemies, like Elites, will sometimes stand still even as you're shooting them.
66*** The {{Non Player Character}}s also can't drive any vehicle for cookies and their entire battlefield strategy is to walk left and right while shooting unlimited ammo at an enemy. If they weren't [[GameplayAllyImmortality invincible]], they would be dead in seconds.
67*** [[TheSquadette Kat]] in particular gets a special chance to demonstrate her idiocy in the third level of ''Reach'''s campaign. In a Warthog's driver's seat, she drives right into knife range of enemies wielding anti-vehicular weaponry and spends several minutes repeatedly making finicky three-point turns around plate-sized rocks; in the turret, she prioritizes shooting a Grunt who's half a mile away and behind cover over an Elite whose shields you just dropped and is currently meleeing the vehicle. On foot, Kat fares no better; she'll refuse to follow you to the next objective, charge in and alert enemies who you would otherwise have taken by surprise, and [[GameplayAndStorySegregation ignore her own advice]] by entering into brutal hand-to-hand duels with ''[[MegatonPunch Hunters.]]''
68*** On the last level of ''Reach'', you're paired with Emile. Despite acting like a tough BloodKnight in cutscenes, in gameplay he's a lot more cautious — too cautious, in fact. He's equipped with a shotgun but seems [[ShortRangeShotgun unaware of its range]], firing it from across the map as though he thinks it's a sniper rifle.
69*** Friendly Army AI is still impressively hell-bent on dying at the hands of its own stupidity. Troopers are unable to differentiate between area-of-effect and precision weapons; therefore, they'll fire round after round from a rocket launcher at groups of infantry that include ''you'', unload that Concussion Rifle into an enemy who's two inches from their face and kill themselves in the process, and charge into combat with enemies whom are currently being blasted to pieces by your tank. Their default response when stuck with plasma grenades is to scream and hurl their suddenly-explosive bodies at your feet. ''Reach'' introduced a "fireteam" mechanic where troopers who you meet up with are labeled on the map and get names, but more often than not it doesn't matter since they'll all be dead within seconds anyway.
70*** Civilians are equally as dumb, running around like headless chickens instead of being in an area both unlikely to be scripted for a Covenant dropship to unload its troops or safe from scripted spawning enemies. Nope, they just absolutely '''love''' being imbeciles, running '''right''' into your line of fire when fending off Covenant troops.
71** In ''{{VideoGame/Halo 4}}'', it seems that the allied AI has gotten even ''dumber'' since ''Reach''. [[KickThemWhileTheyAreDown Shooting at dead enemies]] was perfectly fine in previous games when they were shooting them after the fight is over, but now they're shooting at dead Covenant and Prometheans in the middle of a firefight and there are still half a dozen left firing at them. In vehicles, they're even worse; their line of sight is smaller than Covenant AI in their own vehicles, allowing the latter to shoot at you without any response from allied AI until you drive closer, and they drive pitifully slow whenever behind the wheel, leaving you exposed should you be in the gunner's seat.
72** In ''VideoGame/Halo5Guardians'', your ability to command your AI squadmates is designed to mitigate this. If you choose ''not'' to command them, though, get ready for maximum stupid. Even if you do command them, they might not carry out your order in the most logical way (e.g. you tell someone with a sniper rifle to attack a full-heath [[BossInMookClothing Knight]], and s/he decides to fight it in hand-to-hand instead). Also, getting them into your vehicle can be a real pain in the ass sometimes.
73* In ''VideoGame/HalfLife1'':
74** If you have a security guard following you during the segment with the trains, they will have absolutely no second thoughts about stepping onto an electrified rail line and instantly killing themselves if it is the only route to get to you on the opposite side of the tracks. And sometimes even if it's not.
75** Revolutionary at the time was the ability of enemy soldiers to make informed use of cover and grenades, running around corners to escape explosions and throwing grenades into the player's cover. One other thing they could do was set grenades as traps while retreating; however, more often than not, they would be distracted by the approaching player's gunfire ''while setting the trap'' and return in kind — [[ExplosiveStupidity immediately forgetting that they were standing above a live grenade.]]
76** The soldiers also aren't programmed to be careful of other soldiers' grenades (or other soldiers' positions relative to their ''own'' grenades) which can result in bizarre occurrences where soldiers seem to aim at their own side instead of Freeman.
77** The friendly HECU marines in ''VideoGame/HalfLifeOpposingForce'' will sometimes either stop following or turn on you for no reason.
78*** ''WebVideo/FreemansMind'' has many shining examples of the above. Highlights include Alien Grunts forgetting how ambushes work, killing themselves dropping from aircraft, not noticing Freeman even when he's shooting at them, Alien Controllers following Freeman into cramped hallways (and acting like "dogs strapped to jetpacks who can shoot ball lightning from their paws", in Freeman's words), Security Guards standing out in the open to fire, and soldiers taking UnfriendlyFire and LeeroyJenkins behavior to new heights — blowing each other up with grenades is the most common, but they've also bombed each other, [[HoistByHisOwnPetard fallen into their own traps]], and chased Freeman around corners even after he shot others who also ran that way.
79* In ''VideoGame/HalfLife2'':
80** Many of your allies don't seem to understand the concepts of "I'm blocking Freeman's way" or "maybe I shouldn't stand in the narrow hallway". The enemies with guns frequently run out, aim at you, and stand still while shooting, frequently in the open in a hallway or a similar location.
81** Your squadmates don't seem to understand that stealth and evasion are sometimes important. They will run headlong into sniper fire every time without a moment's hesitation, and upon encountering a strider, the black guy you join up with toward the end of "Follow Freeman" starts shooting at it with his ''submachine gun'', drawing its attention to both him and the equally ill-armed player.
82** Combine soldiers will only fire at you if they can see your head, meaning [[https://www.youtube.com/watch?v=e0WqAmuSXEQ any object between your head and a Combine soldier, no matter how small, acts as cover]].
83** In ''Episode One'', you have to escort several waves of Rebels safely past increasingly thick Combine fire. If they were just smart enough to run full tilt along the predetermined path, they'd probably all make it, but it wouldn't be a proper EscortMission without suicidal [=NPC=]s.
84** It is possible, through unusual circumstances, for an entire group of resistance fighters to kill themselves if you leave them in a bathroom alone, since they can apparently ''[[DeathByFallingOver trip over the bathtub and break their necks]]''. To be fair, it's [[TruthInTelevision totally possible]] for people to die from the blunt force trauma of falling over, but it is ''highly'' unlikely for a group of people to simultaneously die this way through sheer clumsiness, ''especially'' when said people are not drunk, sick, or otherwise compromised.[[note]]One also has to wonder how something like this happens in a game that isn't programmed to deal FallingDamage to an entity that is merely knocked prone; most likely, they somehow clip into the ground and the game considers them crushed to death.[[/note]] This is also more common in ''Garry's Mod'', but can occur in ''Half-Life 2''.
85* ''VideoGame/Left4Dead'':
86** AI survivors usually wait a few seconds before actually deciding to catch up with the player, and if you get attacked by any special infected other than a Tank, they may prioritize shooting regular zombies instead of trying to free you. Made worse in Survival and VS mode, where the modes have a melee attack cooldown effect and the computer keeps trying to melee zombies off them when they have to recharge. Most likely a programming oversight by Valve and has yet to be fixed.
87** AI survivors also will sometimes fail to realize when you're lying on the ground right next to them, incapacitated, and just stand around and let you die if you are on ground that is slightly higher or lower than they are.
88** Sometimes the special infected may not be stuck, but will try to attack you from a position where you will never get hit and will keep doing it if you don't move.
89** If an AI Tank incapacitates a survivor, he will typically pound them until they are dead. While this deals devastating damage, it also forces the Tank to stay still, leaving him extremely vulnerable to gunfire from other survivors. The sequel fixed this quirk by making the AI Tank chase down healthy survivors while ignoring the downed ones, which is what human-controlled Tanks usually do in Versus mode.
90* ''VideoGame/Left4Dead2'':
91** The AI survivors will now usually leave you to die if you are strangled by a Smoker 2 feet away from them if there are common infected near them, and even if you are perfectly several feet away from the AI in a straight line and are being pounded by a Charger, don't expect the AI to start shooting until they are at least in half the range from them to you. Also the same problem with Jockeys, but made worse since Jockeys can move you and Survivor AI seems to be incapable of doing more than one action at a time when they move. If you get ridden by a Jockey, Survivor bots will opt to shove the Jockey off when they are not close enough to do so instead of, you know, shooting it.
92** Survivor AI also get easily confused when multiple players are incapacitated. The bots either go back and forth trying to decide who to revive or may ditch you to try and save someone else that is close to death, even if they are too far away to be saved in time. [[SpitefulAI When it's another AI player in trouble, though,]] they instantly drop everything and save them in no time at all.
93** Survivor AI are bad at dealing with special infected in VS mode. It is possible for the AI to keep shoving you and then run off, never bothering to shoot you, or are too slow to notice that you are slashing at their backs. There's a theory that nerfing the survivor A.I. was a way of increasing difficulty. The general consensus is that [[https://www.youtube.com/watch?v=VqyNS7ZdY1A they went a little bit too far]]...
94** AI survivors will blindly stare at a witch and slowly walk around her even if she is already being aggroed. This can be extremely annoying in Hard Rain, where the entire level is filled with witches.
95** AI survivors also will never learn the concept of "Fire = Hot" and will gladly attempt to run through a fire to get to you. Problem is, they ''do'' know to run back when damaged by a level hazard (such as, say, fire), so they will just run back and forth into the fire until either the fire dies or they get incapped if there's no other way around, instead of just waiting for the fire to disappear. They are also oblivious to a Spitter's acid pool and will stay in the puddle until they start taking damage instead of running out of it as soon as the acid begins to form on the ground or other surface.
96** AI survivors are actually quite intelligent when you're nearby, being practically aimbots. However, once you are a good distance away, they will forgo all other common sense and try to keep up with you, including but not limited to: Forgetting to shoot, forgetting to use a bridge, forgetting they're being chased by a tank, and forgetting pounced/snagged comrades.
97** In an inversion, AI infected are actually [[ArtificialBrilliance extremely intelligent]]. They will actively hide from your view until they've prepared to attack, Spitters will run and attempt to die in choke points, and will use a combination attack (such as a Charger plowing through people before a boomer comes and slimes everyone, or a Hunter will pounce and a spitter will spit on him to deal extra damage and deny others from simply punting the hunter off) against the Survivors. The Special Infected do have a few quirks, though. For instance, while they often do hide, their hiding places don't always cover them all the way. You'll sometimes find a Hunter or Boomer trying to hide behind a lamp post. Another thing is, Hunters and Jockeys ''will'' pounce on survivors in the middle of a non-overwhelmed group, resulting in attacks that can be measured in hundredths of seconds before they're killed. Also, the Jockeys have no concept of ambush, [[LeeroyJenkins running straight into quadruple gunfire if it means getting closer to a human]].
98** AI survivors also ''love'' to shoot through human teammates and throw off their aim, especially if said humans are trying to make precision shots with the hunting rifle or sniper rifle. The only positive here is that AI survivors are [[FriendlyFireproof incapable of harming teammates regardless of difficulty]].
99** AI survivors will also shoot any Infected on their sight. Even if said infected is in front of hazards like a Crescendo Event that is triggered by shooting something, or in the worst cases, when an Infected is near ''a Witch''. Fortunately, they can't anger Wandering Witches when they shoot them, but good luck with normal Witches.
100** On the other end of the spectrum, the Common Infected love climbing stuff. Even if it makes no sense whatsoever. If they're attacking the Survivors, and said Survivors are standing near anything that can be climbed over, the Infected will usually go for it, even if it means nearly ''turning their backs'' on their targets.
101** Special Infected Bots also have little to no concept of [[FallingDamage fall damage]]. It's not uncommon to hear AI Boomers or Smokers leap to their deaths and explode behind you. In the case of Boomers it's partly intentional and partly not, as if they are programmed to do it in an attempt to blow themselves up and coat the team in bile, but then forget that when they're trying to catch up to the survivors in the first place. It's even more hilarious when you see it for yourself.
102** Taking advantage of the Common Infected's lack of height perception, i.e. chucking a vial of Boomer vomit out of a hotel window, is not only a hilarious way to quickly clear a building, but a satisfying one too, as one cannot help but snicker as hordes of zombies run straight past the Survivors and willingly [[GravitySucks throw themselves off a building]].
103** Survivor bots are generally good shooters when picking off zombies from a distance, but they have a nasty tendency to freeze up when they are mobbed in close range. It's not uncommon to see a survivor bot just stand there and barely do anything to attack the 10+ zombies that are attacking them. Survivor bots also tend to lag behind quite badly behind human players, which can result in either the bots getting in trouble and the players needing to backtrack to save them or human players getting mobbed and the survivor bots taking their sweet time to catch up.
104* Your RedShirtArmy allies in the ''VideoGame/MedalOfHonor'' series tend to suffer from this, e.g. running blindly into the enemy's line of fire, not taking cover, or allowing themselves to be melee'd to death. This frequently results in mission failure during {{escort mission}}s.
105* ''VideoGame/{{Metro 2033}}'': Fascist soldiers have an excellent awareness of cover. They'll duck, hide, peek around before stepping out, and will call to each other. Unfortunately, this often happens ''on the wrong side'' of what they've chosen to hide 'behind'.
106* ''VideoGame/MegaMan8BitDeathMatch'':
107** The bots are not the best things around, due to the limited bot support in Zandronum. This leads to such things as being unable to chase players up ladders, and ''running on the spot over cliff edges''. Thankfully, the latter has mostly been rectified in v3a now, with bots trying to "look" for any opponents if stuck on a ledge, although unfortunately it doesn't work in certain spots.
108** The original version of Burst Man's stage had a large pit of buoyant, pink liquid in the middle. The one CPU that would inevitably be spawned here would be completely incapable of leaving it, being unable to figure out the bouncy bubbles used to propel yourself out. In fact, it was almost impossible to lose on this stage in single-player mode, mostly because the AI had a tendency of camping out at the landmarks on the corners of the map rather than move around it looking for opponents, so it was pretty rare for anyone besides the player to actually score any kills.
109** The CPU does seem to have some amount of common sense, such as realizing that they shouldn't jump into lava. However, they won't know what else to do about the lava and will simply stand at it, even if they can jump over it. This is easily seen in Junk Man's stage, where the CPU will ''want'' to get their hands on a weapon out on an island in the lava, but instead of jumping across to it, will simply stand there staring at it, even letting you shoot it before they do anything.
110** Dynamo Man's stage includes a particularly funny example where CPU players seem to really like riding the giant conveyor belt running through the center of the stage. Because they have a level of edge detection that prevents them from falling off the death pit at the end, you can easily find about five or six CPU players accumulated at the end of it to be slaughtered with certain weapons.
111** The AI also cannot figure out the instant death Force Beams in Quick Man's stage and have been known to simply walk right into them and die.
112* Enemies in ''VideoGame/NosferatuTheWrathOfMalachi'' have been known to do things like continuously run into walls or get stuck on objects. They also seem mostly incapable of opening doors.
113* Bots in ''VideoGame/{{Overwatch}}'' are generally very stupid, even on the highest difficulty setting:
114** All bots have little sense of self-preservation. They'll never fall back to grab health packs, and will frequently deploy their healing abilities in the middle of battle rather than retreat before using them. "Objective Kills" and "Highest Killstreak" cards given at the end of bot matches often have dozens of kills on them, simply because the bots never even try to avoid getting killed.
115** Reaper bots can't use their abilities very well. They never seem to teleport, typically stand still when in wraith form rather than retreat or move past the enemy, and often use their Death Blossom against a single person or even no one at all.
116** An average Soldier: 76 bot life goes as follows: The bot uses his sprint to [[LeeroyJenkins charge ahead of his allies]], then engages the enemy alone, firing wildly at them. When he inevitably gets shot and notices he's at low health, he'll throw down his biotic field on the spot instead of retreating, and promptly get sent back to spawn to do the same thing over again.
117** Bastion bots may or may not bother transforming before attacking. It's not uncommon for a Bastion bot to get a "recon kills" card at the end of the match simply because he spent most of his time spamming his recon mode's gun at the enemy.
118** Torbjorn bots are easily the stupidest of all. They'll never upgrade their turrets, and whether they even deploy turrets at all depends on the map. Usually, they'll just wildly fire their gun at the enemy as if they were an Assault hero, occasionally randomly throwing down a turret in the middle of battle (which is inevitably destroyed within seconds).
119** Almost every time you see the bots coming towards your team, it will be single-file. It's not uncommon for a player to get the Play of the Game with a team kill because the AI bunched together and got taken out by a single Death Blossom, or got charged offstage by Reinhardt, or one unit got sticky-bombed (by Tracer) but didn't retreat from their allies and blew the team straight back to respawn.
120* ''VideoGame/{{Painkiller}}'''s AI wasn't exactly what you'd call Mensa material to begin with, but the expansion ''Painkiller Resurrection'' makes it even worse, where enemies who can't deal with the erratic level design get hung up constantly on corners, curbs, and other random bits of scenery as they try to charge the player.
121* Teammate AI in ''VideoGame/PAYDAYTheHeist'' are not too intelligent or speedy. Bots will usually fail to notice that you are being electrocuted by a Taser, even if he is next to the two of you. They will also usually be oblivious to a Cloaker who just downed you and will try to revive you, only for them to be instantly downed by the same Cloaker. Bots will also try to revive someone regardless of if another person is already on the job, so don't be surprised if multiple bots attempt to revive the same player, which doesn't speed up the process. Friendly AI never sprint, which means that unless you want to risk being downed while your team is too far away, you have to approach most levels slowly so the bots can keep up. This was also made worse in a patch which made bots keep a bigger distance away from you when moving.
122* ''VideoGame/PAYDAY3'':
123** While the [=NPCs=] are usually competent at noticing suspicious activity, {{human shield}}s are something they struggle with on stealth. To put it simply, you can run up to someone to use them as a shield and nobody will notice unless you do it right in their line of sight, even while the person ''exclaims in fear right next to them.''
124** As per the last game (with some exceptions), guards don't notice certain things when they would alert anybody in real life. The vault and panic room in ''Touch The Sky'' can suddenly be open and the [[EliteMook Head Guard]] won't care. Similarly, they don't become suspicious of unmasked heisters carrying bags of stolen goods. Meaning that you're free to, say, walk in and out of the vault from the lobby in ''No Rest for the Wicked'' with money and nobody will bat an eyelid.
125** While your bot teammates are mostly competent up to Very Hard, they suffer ''big time'' on Overkill, especially when you're playing solo. They're nowhere close to the bullet sponges they were in the previous game and they don't have any concept of cover or tactics, so expect them to get torn to shreds in mere ''seconds.''
126** The police are normally careful around hostages or human shields, resorting to either using their weaker weapons and grenades or trying to [[PistolWhipping melee]] you in the case of the latter...unless the civilian happens to be in the way of the first responder patrol car or SWAT trucks driving in, then they'll run the civilians over and kill them without even blinking.
127* ''VideoGame/PerfectDark'':
128** The Dark Sims are meant to be ArtificialBrilliance, and for the most part they are — they know exactly where you are and will usually hit you when you're moving. The Meat Sims are meant to be the absolute in ArtificialStupidity — they're lucky if they hit you when you're standing still, and an explosive-centered game against a team of Meat Sims will invariably end with their team's score deep in the negatives. Unfortunately, "always hit" and "shoot to miss" mean "with bullets that [[{{Hitscan}} hit instantly]]": rockets are slower. This means you'll run ''away'' from the Dark Sims' shots and ''into'' the Meat Sims'.
129** Sims of all difficulties have literally no idea how to detonate Remote Mines. Put them in all six weapon slots and Dark Sims get curb-stomped as easily as Meat Sims. They're also incapable of detecting Proximity Mines and will walk straight into a hall blatantly plastered with them.
130** They ''kinda'' know how to use the Dragon's proximity-mine secondary, but will only do so as a last resort when it's out of proper ammo. Not great, but workable — but then they do the same with the Laptop Gun's sentry-mode secondary, which just plain doesn't work if you had no ammo when you deployed it.
131** Then there's [[EscortMission Elvis]] in the Single-Player Campaign. While he can be helpful at times and [[TheAllSeeingAI can always pinpoint cloaked enemies]], if he gets himself killed, then you have to start the entire level all over again. This can be especially bad on Attack Ship, where he simply stands out in the open and fires while the enemies fire back and charge at him. It can be a struggle to keep him alive for the entire level, sometimes you'll have to charge in ahead of him and take the enemies out before he gets too close. Luckily, he isn't in too many missions.
132* ''VideoGame/{{Phlegethon}}'' probably has an ''intentional'' example, being a homage to old FPS games from the early 2000s, but the rather poorly-designed AI has enemies programmed to loiter through a fixed area - once they've crossed the unseen line, they automatically turn back allowing you to gun them down. You can also take advantage of this invisible border to retreat and take cover (and laugh at a dozen zombies or gigantic monsters several times your size inexplicably fleeing away from you).
133* The item of the day discount in ''Videogame/PlanetSide 2'' is (generally) chosen randomly by a simple program on the game's servers. However, there is nothing stopping it from selecting an item that ''everyone'' has by default and trying to sell it, which it has done — repeatedly.
134* The first ''VideoGame/ProjectIGI'' can get really ''terrible'' with this trope at times.
135** Kill a mook from a distance, within the presence of his comrades, and as long as you aren't spotted, other mooks will strangely ignore their downed comrade. As such, in SnipingMission(s) you can gleefully stay on top of a guard tower and take your sweet time picking away at enemies before climbing down.
136** Enemy soldiers' corpses doesn't immediately disappear either after they're sniped. Expect mooks entering a new area to mindlessly walk ''over'' a dead colleague, without being suspicious.
137** There is a ShootingGallery at one point where terrorists are too excited testing out their new minigun on targets, to the point where they fail to realize you're in the same room as them. One can argue it's because of the gunfire drowning out your gunshots, but the mooks are standing in a parallel line and well within each other's sight.
138** There's also moments with massive shootouts against enemies within a single area (without equipping silencers) and despite gunfire, enemies in other parts of the base will be completely oblivious to the action. The only way to attract enemy attention is to trigger alarms, because the AI for mooks programmed them to respond only towards said alarm.
139** Mostly averted with the sequel whose enemy AI is improved, though there are occasional moments.
140* ''Quake'':
141** In ''VideoGame/QuakeI'', ogres always fire their grenades horizontally — so if you stand on a ledge above them, they end up blowing themselves up.
142** ''VideoGame/QuakeIIIArena'' uses an AI system based on brushes (firstly used on the Xaero bot mod for ''Quake II'') instead of waypoint-based systems. This, however, doesn't mean that the bots will play like humans. They cannot jump or use platforms (there's a reason why ''Q3'' lacks platform-based maps, and uses jumppads instead) and they cannot navigate their way onto items which take some kind of risk to get. This is also a problem in ''VideoGame/OpenArena''.
143* ''VideoGame/RedOrchestra'' has AI combat engineers that set timed explosives in the middle of groups of friendlies. Given the game's realism, this tends to be messy.
144* ''VideoGame/RainbowSix'':
145** The ''Rainbow Six'' AI was able to generally avoid this because ''you'' tell it where to go before actually entering the level, but it still has its hiccups. In the first game in particular, it will often get caught up on walls no matter how well you've placed the waypoints. In ''Rainbow Six 3: Raven Shield'', a fireteam left in a corner under AI control will inevitably cover ''the wall'' instead of the wide-open room around them.
146** Also in ''Rainbow Six 3'', a terrorist in an entirely different room is liable to hear your footsteps through the wall (bad enough already) and then proceed to throw a grenade. [[ExplosiveStupidity At the wall. Right next to them.]]
147** The ''Vegas'' sub-series is much worse in this department. Despite the removal of long, waypoint-based commands for your team, you will more often than not find yourself forced to step Mike and Jung through every individual meter between them and the door you want them to breach if there is not a straight, flat line between them and it. That's not even counting their tendency to ignore enemies or plant themselves in the least convenient spot imaginable and refuse to move up, thus dooming you to death from an enemy shotgun that walked right past them to hit your blind spot or to an enemy grenade they essentially use you as a shield from.
148* The mooks in ''VideoGame/RedSteel'' are rather incompetent. Occasionally, enemies don't bother dodging or moving when they're being shot at. And if the player is going stealthy, a grenade explosion some feet away won't get the enemies' attention.
149* In the VideoGame/SeriousSam games, each and every enemy is as dumb as a bag of hammers and has very simplistic behavior. However, unlike most examples, this was mostly done deliberately, to allow the game to throw [[TheWarSequence hundreds of enemies at you at once]] without straining system resources. Not to mention the difficulty would be much higher if you had to fight hordes of ''intelligent'' enemies.
150* AI in ''VideoGame/ShadowOpsRedMercury'' weren't the brightest bulbs in the shed. Enemy AI would run right out into the open, even past the player's AI teammates, [[GangUpOnTheHuman just to shoot at the player]]. Teammates fared no better, as they would ignore said enemies completely.
151* In ''VideoGame/SoldierOfFortune II'', [[EscortMission you have to escort Dr. Ivanovich]] near the end of the second level. He tends to follow you into the line of fire like a sheep to the slaughter, resulting in GameOver for you.
152* ''VideoGame/SniperPathOfVengeance'' is pretty bad with this. The game's AI can get really, really, ''really'' awful where the player simply guns down enemies in a straight corridor using ''non-silenced'' firearms, and mooks whose backs are turned will promptly ignore their comrades getting blown away less than ten meters apart. Enemy AI also moves in scripted patterns - mooks hiding in corners will, for no reason at all, step out of their hiding spot and walk right into bullets. Said issue somehow persists for the ''entire'' game all the way, and isn't just a software glitch affecting certain levels.
153* ''VideoGame/StarWarsBattlefront'': The entry on the game's own page had all of these examples removed and replaced with a link to this page, because it was probably ''one-sixth'' of the page itself. And that's not counting the (un-deleted) entries for other tropes that relate to it, like LeeroyJenkins, SuicidalOverconfidence, and TooDumbToLive. Seriously, it wouldn't be ''Battlefront'' without dumb AI.
154** You will sometimes see such things as allied soldiers running directly into a wall repeatedly, or shooting at one for no apparent reason. The reason behind this is that the AI is programmed to move or shoot directly at enemy AIs, and seems to forget to account for intervening terrain. It gets worse on tiered battlefields, where your soldiers will cluster in an empty hallway because there's an enemy on the level directly beneath them.
155** It's also ''very'' common for your A.I. teammates to [[TooDumbToLive walk directly into your line of fire]] ''while you're standing still,'' hurting your kill/death ratio by giving you a negative kill, and removing one unit from your team's reinforcements. If you intentionally moved behind them to shoot them in the back, it'd be one thing, but your teammates being suicidally stupid by deliberately walking in front of you ''as you're clearly shooting an enemy'' is something else entirely. As a final insult, unlike in the [[VideoGame/StarWarsBattlefrontII second game,]] you can't turn friendly fire off in the first one.
156** Also notable is the AI's tendency to spam grenades ''[[ExplosiveStupidity constantly]]'', even if there are multiple teammates around a single target they could just as easily shoot. It's even possible for troops to end up as [[EpicFail their own Nemesis and Bait]], meaning that they blew themselves up with their own grenades more times than anyone else managed to kill them.
157*** Sometimes indoor hallways become completely impassible, as both sides' AI units just stand there filling them with grenades, re-spawning, and doing it again. An interesting experiment is to activate invulnerability and see how many enemies die by clustering around you and getting blown up by allied grenades.
158*** A second enjoyable tactic is to get in one of the NighInvulnerable tanks, wait for enemies to cover it with sticky grenades, and then charge them, mowing down entire squads of foes with their own misplaced explosives.
159*** The "hunt" game type on Naboo has the Gungan team armed ''only'' with grenades. It's absolutely possible – perhaps even recommended, so as to avoid the massive grenade slaughter-fest that inevitably occurs – to sit back and let the enemy bots kill each other off because they simply ''cannot throw grenades with any reliable degree of accuracy''.
160** The main way of increasing difficulty levels in the first game is to deduct 50 points from your allies' [=IQs=]. Defending objectives? That's for squares! Win or lose, a higher-difficulty game will typically end with the player having scored upwards of 80% of the kills or capture points on his team — occasionally, ''the player is the only one on the team with a positive score and would have been wholly better off playing alone''.
161** The addition of space combat in the sequel also adds new chances for stupidity.
162*** If you are flying, say, a Republic Gunship and give the "everybody out" command before you land, your allies will cheerfully ''jump out of the gunship'', ignoring fine details like not possessing a parachute or jetpack, and [[NotTheFallThatKillsYou the height being enough to]] [[TooDumbToLive break their necks]]. You then have kills deducted for every stupid clone you have thus weeded out.
163*** If you land a gunship in an enemy hangar with passengers on board, all except one will get out. If you disembark without taking off and landing again, the one remaining passenger will grab the pilot seat and promptly crash into the hangar wall.
164*** Same with two-seater ships like TIE Bombers, but there's another example involving those. If you get out of a TIE Bomber, your co-pilot might follow you, but then get right back into the bomber and then take off, forgetting that the ship is capable of both braking and performing turns.
165*** A hilarious tactic in space battles goes like this: infiltrate the enemy's hangar, then proceed to use your free time to get in the enemy fighters. Don't leave the hangar, though; just get in long enough to turn the ship around, then immediately exit the fighter. The next time some AI schmuck comes along, he'll enter the ship and bravely fly forward... [[HilarityEnsues directly into the hangar walls.]] If you wanted to earn the points for that kill, keep your eye on the enemy's [[FragileSpeedster lightweight fighter]] (the A-Wing, in the Rebels' case), and simply plug a rocket into its backside every time someone goes to enter the fighter.
166*** One of the most hilariously stupid AI actions in the game comes with the ability to perform evasive maneuvers in any flying vehicle. All too frequently, you'll see a [[FragileSpeedster scout fighter]] make a flawless bombing run against a [[NighInvulnerable capital starship]] while miraculously dodging huge amounts of [[BeamSpam flak]], pull up and begin to fly away... then, for no discernable reason, do a barrel roll and turn 180 degrees, sending themselves [[HilarityEnsues full-throttle into the enemy ship.]] This is actually possible to exploit by firing a missile at a fighter flying directly ''away'' from its parent ship; the fighter will loop backwards to break the lock and power straight into the huge star cruiser right behind it.
167*** Another enjoyable space-related action is placing time bombs on ships just before they take off. Rather than taking the sensible course of action by getting out and ''running the hell away'', the pilots will happily zoom off into outer space, dying in a flaming ball of ship debris shortly after they leave the hangar.
168*** The AI cannot use any transport ship at all in any capacity. Ideally, they should fly in and land troops into the enemy ship. They can't do that. A decent tactic would be to use them as some sort of heavily armed fighter. Again, they can't do that. What they ''can'' do is fully load up the transport and then do nothing but fly around in straight lines like an idiot, unable to fire back as you get five easy kills from the incredibly slow transport.
169** All enemy units are basically forced by the AI into a single, identical game-plan. The implications of this vary; sometimes it just means that the AI ignores things such as the Engineer's ability to supply health and ammo to himself and his comrades, but the majority of the time, it means they will immediately plant themselves on the nearest turret and refuse to either get out when a nearby command post is threatened or even consider ''not'' taking the turret after the sixth time the player shot them out if it. This leads to things like Han Solo taking a seat behind a turret at Mos Eisley, shouting "NeverTellMeTheOdds" as you casually shoot him in the back.
170** If you are a Jedi or any class with rockets, you will end up betraying teammates because when you try to kill the enemy, the AI on your team will stand right beside them. Similarly, if you are a clone commander, stay far away from allies. They are only too happy to wander in front of your [[GatlingGood chaingun]] and die.
171** It bears mentioning that bots will virtually ''never'' try to lock on with a rocket launcher, instead firing blindly and sending rockets flying off across the map (or into their own troops). Tanks are virtually impermeable to all rocket-launcher-based attacks because of this, though they seem to have a little more accuracy shooting down snowspeeders. The one thing that they ''will'' attempt to lock onto are the [[BaseOnWheels Base On Legs]] AT-TE and AT-AT command vehicles, which are so slow and gigantic that it doesn't really matter (and in fact is a hindrance if you're aiming for their [[AttackItsWeakPoint weak point]]).
172** Most of the bots seem to [[GangUpOnTheHuman choose the human player as the primary target]], regardless of whether you pose a direct threat, or if they are even within attacking distance. While sniping, it isn't uncommon to see an enemy stop dead in the middle of a firefight, draw their sidearm, and begin taking potshots at your position. Even shooting an AT-AT walker with a pistol will sometimes cause it to stop in its tracks and slowly turn towards you (sometimes a complete 180) just to return fire, a reaction no one else on your team will garner even if they deliberately fire at it.
173** Judging by their habit of jumping in front of firing units, AI units believe themselves to be FriendlyFireproof. They aren't.
174** Enemies don't understand range, accuracy, or covering fire, and will therefore react to you sniping them by standing out in the open and firing at you with the weak and inaccurate blaster pistol, never advancing, flanking, or even ''trying'' to close the range to a manageable distance. "Native" enemies (such as the Wookiees on Kashyyyk) have unlimited reinforcements and their deaths don't detract from hostile reinforcement count. Proper abuse of this error can result in upwards of 250 points, 150 kills, and 50 headshots in one life.
175** Vehicles offer many new and fascinating ways for the AI to be stupid. Pilots on the Hoth level of the original ''Battlefront'' have been known to have their flights abruptly terminated by, say, the ceiling of Echo Base, which they drove into for no apparent reason (apparently thinking they've cleared it far sooner than possible with how far back the snowspeeders spawn in the hangar). Other times, the AI will abandon a nearly intact vehicle next to a hostile spawn point; respond to the Sabotage power in Galactic Conquest by driving off in a crippled vehicle rather than sitting on the repair droid that is ''right there''; ignore an unoccupied and intact enemy tank, when stealing it could provide a massive swing to your side; take several minutes to respond to your order to get in; sit there stupidly and get blasted into spare parts by an AT-AT; or use speeder bikes solely for transportation without realising that you can do a lot of damage with them by using their underslung blaster, which virtually never needs to recharge and deals a surprising amount of damage... or by [[RammingAlwaysWorks running the enemy down]], which does even ''more'' damage and takes no ammunition at all.
176** AI Dark Troopers and Jet Troopers seem to use their jetpacks solely to fire at people from the sky, without using them to close with a spawnpoint or to escape an attack. Jet Troopers are even worse, as they'll hover in place as long as their fuel lasts rather than thinking of moving about to make themselves harder to hit (Dark Troopers do this, though that's more a result of how its jump-jet works).
177** Classes that carry Recon Droids like the Magnaguard and Imperial Officer often deploy them at the worst possible opportunities — usually when they're out in the open and under direct fire, thus their character is a sitting duck while they try to fly the droid around. Even if they aren't immediately killed, the AI only uses the droid to shoot at enemies with its extremely weak blaster, and never makes use of the more effective 'self-destruct' ability.
178** If you play as the Ewoks on the Endor Hunt, the Stormtroopers struggle to hit you at close range; you can be so close that you are literally touching them and they ''still'' can't hit you because they're programmed to shoot at a man-sized target's chest but lack the ability to adjust if the target is half the normal size. They also can't hit you with their sniper rifle because the foliage seems to confuse them and make them simply stare at you, unable to do anything. In the same vein, if you decide to play Mos Eisley Hunt, you'll be pitting Tusken Raiders against Jawas. Barring the player being really good and playing as the Tuskens, the Jawas will win almost every single time, because the AI Raiders cannot comprehend that Jawas are half the size of a normal human, and will consistently shoot over the Jawa's heads.
179** Short-range weaponry occasionally gives the AI fits. It's not uncommon for Clone Pilots in the first game and Dark Troopers in the second to attempt to snipe you with their {{Lightning Gun}}s from about ten yards outside their effective range. Bothan Spies at least remember that their incinerator weapons are only effective at melee range, but they'll often forget the concept of walking up to the target, resulting in the stupid alien staring at you ineffectually while you casually shoot him in the face. This also extends to Force Lightning; if playing with AI, the villains in Hero Assault are put at a severe disadvantage from the outset since Count Dooku and Emperor Palpatine ''won't even attempt to use their lightsabers'', instead opting to spend most of their time shooting Force Lightning at people, missing them by a country mile, and often electrocuting allies that walk by.
180* In ''VideoGame/{{Strife}}'', when you converse with the rebel soldiers while they stand around as [=NPC=]s, they sometimes warn you not to stand too close to the enemy's "Crusader" robots, due to said unit's short-range but highly damaging flamethrower. When these same rebels see active duty on certain levels, however, their AI causes them to attempt to close to melee range on their enemies, including Crusaders, resulting in many of them going to their fiery death like lambs to a slaughter. This is despite the fact that the rebel soldiers have no special melee attack; their only attack is to fire an assault rifle which works reasonably well from a distance.
181* Quite ''a lot'' by your squadmates in ''VideoGame/SWAT4''.
182** If you give an order, sometimes it can be overruled and ignored if something "'''more important'''" comes up. Examples include getting an urgent message on the radio, issuing multiple orders in a row, spotting a suspect, etc. This sort of makes sense, but can be frustrating when you later notice that the action you made still hasn't been completed.
183** Your teammates usually scan the room thoroughly before giving off reports like that. But some AI wonks do occasionally appear in tighter or more crammed-in spaces. Sometimes your teammates ''even accidentally shoot you'' if your squad is caught in a fire fight with the criminals. Sometimes ''they run in front of your gun while you're trying to fire''. Or switch place in front of the doors if one of them is lacking the type of grenade you ordered to be thrown into the room. Which is of course logical... unless there's a friggin' suspect right in front of the door, mere centimeters away, ready to shoot them while they're waltzing in front of the exposed doorway. Most of the AI issues of your squadmates and problems with giving more complex chains of commands were thankfully fixed by patches and the ExpansionPack.
184** No matter what the circumstance is, even when under fire from military grade weaponry, the AI will ''always'' prioritize the need to complain about how you are "in my way sir".
185* ''VideoGame/TeamFortress2'':
186** The game brought out AI bots after launch in an update patch. Originally, some bot variants proved quite difficult, such as Heavies and Snipers, whose pinpoint accuracy and [[ComputersAreFast wicked reflexes]] made them a GameBreaker in their own right. However, those issues were smoothed out to an extent, but there are still some fairly dumb AI moments.
187** When the bots debuted, the pathing in Attack/Defend and Payload maps was awful: BLU bots would all crowd on/near the Payload, making them easy pickings, and the RED bots would repeatedly ram themselves against the back wall of the Spawn, thinking that to be the shortest path to where the action is. This has since been more or less fixed.
188** Engineer bots are prone to some serious problems concerning placement issues for their gear and ''their own survival.'' This is most obvious when, for instance, an Engineer sets up his sentry overlooking an important area with its main firing arc facing a wall or pylon, obscuring a good 90 degrees of its targeting arc. Furthermore, some engineers will alternate between forgetting to wrench their machines to repair them, and forgetting to do anything ''but'' whack their sentry with the wrench. This ties back to their placement problem issue, in that they will often sandwich themselves between their sentry and their dispenser, [[TooDumbToLive leaving their sides wide open to enemies]]. This leads to scenarios where even the laziest sniper can simply peer across the map at them, line up the LaserSight, and hollow out that apparently already-empty hard hat. They also have an apparent blindness to Spies, continuing to bash a sapped machine even after the sapper is removed, leaving their spines [[BackStab open for surgery]]. Also, Engineer bots have been in the game for ''years'' and to this day they make absolutely no attempt to upgrade their teleporters beyond level 1, if they even build the Exit at all!
189** Medic bots have a tendency to forget to turn their healing beam on their allies or forget to watch their backs, again, opening them up to knives, flames, and scatterguns. They will also pop an Uber the moment their heal target takes any amount of damage, even if it's from a puny pistol shot and that Heavy they're powering up has yet to lumber across the map to his destination. Finally, they have an odd tendency to forget that they have a syringe gun, even if they've used it previously, and will run from even critically wounded enemies who would go down in one or two syringes if they attacked instead of retreated. Many a bot arena round has been lost because the lone Medic ran from a 3-HP Scout... and committed suicide when back in the spawn room.
190** Ubercharge itself tends to create problems: if two opposing Medics pop it at once and there's no other targets around, then the Medics and their partners will just stand around until the charge runs out, rather than try to run for it and find someone who isn't invulnerable.
191** Pyro bots wisely know to use the shotgun instead of merely acting like LeeroyJenkins and charging with the flamethrower... but this is nullified somewhat by their apparent love of the [[PlayingTennisWithTheBoss airblast]], where they will waste nearly a third of their ammo just bouncing a Heavy back before charging in to burn them — a Heavy that is still shredding them with [[MoreDakka more boolet.]]
192** Scout bots will rely excessively on their pistols, sometimes hanging off at the edges of the battlefield and contributing small 8-point chips of damage, instead of going in close to use their extremely powerful SawedOffShotgun. This leads to instances where Scouts hanging out near their own rear lines are easily picked off by Snipers and Spies, two of the classes they counter best amongst human players.
193** Heavy bots have an ammo management problem, in that they seem to forget how much they actually have. They will often stand on a point and hold down the trigger for two withering seconds and promptly run dry, leaving them to try and keep fighting with their much slower, less devastating shotgun, or scurry off for an ammo refill, no doubt feeling quite embarrassed. Some will keep firing for some seconds even though they're out of ammo, which seems to happen most often when ubered.
194** Soldier bots, like Scout bots, will rely too much on their secondary weapon. Having exhausted all their rockets in their current clip, they will switch to the shotgun and empty it as well, then fumble reloads into the shotgun instead of the much more powerful rocket launcher which reloads faster than the shotgun.
195** Demoman bots, alternatively, forget about their secondary weapon, the sticky bomb launcher, and fight primarily with the grenade launcher. While this is not necessarily bad, the sticky bomb launcher is incredibly versatile and the bots will drop them to retreat — a perfectly serviceable use, until you watch the bot forget about them entirely and come charging back at you. Through its own carpet of stickies. Stand just close enough, and Demoman bots will detonate their bombs as they approach, blowing themselves to kingdom come.
196** Sniper bots are smart enough to know when to switch to their secondary weapon, and when to listen for sounds around them. However, they also seem to only think about line of sight, as opposed to cover, and quite a few Snipers will stand in fairly obvious places to take their shots. They will also try to take shots while sitting in the safety of the spawn room, when there is no way for their shot to hit anything but a wall or door. Sniper bots, if left alone, will sometimes sit in the spawn room the entire match, scoped in, staring at the door. In Mann vs. Machine, robot Snipers rely exclusively on fully charged body shots to kill as to give the human players a chance to find and kill them before they get a TotalPartyKill.
197** Finally, Spy bots are... not entirely implemented, and rightly so, as they are the class with [[DifficultButAwesome a difficulty curve so steep it counts as a cliff]] but [[WeakButSkilled also extremely dangerous]].
198*** They know how to sap, how to disguise, how to backstab, and how to use their revolver. In theory, they should be able to operate loosely as their class profile dictates (though the inability to cloak is obviously an issue). In practice, Spies will sit in the spawn room as often as Snipers, if not more, wearing a mask but not actually moving. They also prone to spoiling their PaperThinDisguise, but that is simply because being convincing is difficult when they cannot attack. They also have very odd backstab usage rules, in that they will sometimes skip an obvious stab in favor of shooting, and sometimes forget that they have a knife at all.
199*** If you set all bots to Spies on both teams, they will completely ignore each other because they think they are all on the same team. [[https://youtu.be/H5SC8nparT8?t=23 Even if they are just leaving the enemy spawn.]]
200** These are lampshaded in the WebAnimation/TeamServiceAnnouncement ''[[https://www.youtube.com/watch?v=xYN7RxpumU8 Fake Players]]''. All the bots can be told apart by their frequent idiocy, such as running into walls, not seeking health when weak, and using the wrong weapons for the wrong situation. The vid intends to educate about "bot servers" that fake having people in the server, thus attracting more actual players, by having bots play using fake Steam accounts (rather than the server-based bots they're supposed to use, which stopped counting toward the player count displayed on the server list shortly after bots became available).
201** Some particularly stupid bots won't even make the distinction of the weapon they are using. This can lead to some [[HilarityEnsues ensuing hilarity]] when an engineer starts ''shooting'' his sentry with his shotgun instead of using his wrench to upgrade/repair it. Though it can also be particularly annoying when a medic will follow you, relentlessly blasting you with needles, thinking it's a medigun beam.
202** Bots tend to [[https://youtu.be/3PRqmz3vcQQ?t=190 commit mass suicide]] at the start of every round in koth_nucleus because they don't recognize that the bridges that lead to the control point only extend once the control point is enabled.
203** cp_degrootkeep is a map that tends to ''really'' screw with bot AI, due to its oddball design and mechanics. It's the only Medieval Mode map in the game, meaning that all weapons apart from melee and a handful of extra gear (i.e. the Huntsman bow, the Crusader's Crossbow, and the Demoman's shields) are inactive. Bots are very bad at realizing this, and tend to still behave as if they have their missing weapons, leading to, for instance, Snipers doing their usual "camp a good sightline" schtick but with nothing but a kukri to do it. It also lacks a typical path to the enemy team, instead demanding the RED team jump off the battlements of their starting castle to confront their foes. The RED team bots will not realize this, and instead tend to hide inside the castle walls, running straight into them.
204* The fanmade mod ''Team Fortress 2 Classic'' makes several tweaks to bot AI, making them a very different, yet still quite imperfect experience:
205** On Attack/Defend maps, attacking team bots tend to place capping the point very low on their priority list, preferring to chase stray enemies, heal minor wounds, and spend several minutes trying to snipe at ''inactive teleporters'' instead of winning the game.
206** They have a strange obsession with constantly jumping while they attack, though this does make the nightmarish Sniper bots a little more forgiving - it's like a built-in delay before they effortlessly headshot you.
207** When they see an enemy Sentry, they'll do their best to find a spot just out of range, hurling projectiles at it until it's destroyed... except that this 'mode' causes them to stay frozen in one place completely oblivious to other threats, leading to them getting destroyed by just about anything else, including the Engineer who built it. Not only that, if the builder picks up their Sentry and starts to move it somewhere else, they will not register this and continue spamming at the empty space where it used to be, until the Sentry is redeployed.
208** Demomen combine the above flaw with a glitch that makes them unable to detonate their stickybombs whenever they launch them at buildings, leading to their AI effectively shutting down whenever there's an Engie nest nearby.
209** Pyros are the reverse of their base game equivalent, having zero idea what an airblast is. However, the damage of flamethrowers has been ramped up severely in this game, making them quite painful to deal all the same.
210** Medics completely ignore their own health while using their Medigun, often standing inches away from health kits when they're about to die. If their heal target gets killed, they also love to LeeroyJenkins straight into the killer with their feeble Syringe Gun... even if it's a ''level 3 Sentry''.
211** Spies make no attempt to avoid enemies while they're cloaked/disguised, leading to them stubbornly butting against anyone who gets in their way, not even trying to fight back. However, when they DO decide to fight back they can be quite nasty. They're practically omniscient about each enemy's health, and if you can be killed by one Revolver shot, expect a Spy to jump around a corner and snipe you before you can blink.
212* ''VideoGame/TimeSplitters'':
213** In the [[VideoGame/TimeSplitters first game]], the AI had a nasty habit of running in circles until you shot it. Annoying when the enemy does it, downright infuriating when your teammates do it. Also, on custom maps featuring inaccessible weapon spawns, the AI characters would just run around in a vain attempt to access the secret cache. On custom maps featuring NO weapon spawns, the AI characters would not move AT ALL.
214** In ''VideoGame/TimeSplitters2'', there was a map that consisted of two bases with a gorge in between, joined only by bridges. In some game modes, bots (both friendly and unfriendly) would start running across a bridge, then pull a 90 degree turn and run off the edge for no discernible reason.
215** The ''VideoGame/TimeSplitters2'' AI could easily be driven to laughable behaviour by the map editor. Make a map with two rooms, no starting weapons, and one gun in the second room and the AI players will march in a perfect conga line over to the gun. When one gets it, all other AIs will stand frozen while the one with the gun shoots them. This in spite of the fact that there is a melee attack in the game; in fact, the player can punch any of the unarmed AIs to death and they will remain stock-still throughout the process.
216** The Industrial Tileset has some gamebreaking design for the AI. If a player uses a specific tile, and stacks the tile on top of another of the same tile, and the player tightrope walks across protruding pipes on the geometry of the edge of the wall, you could place a chamber in a location that theoretically is unreachable, but thanks to this exploit can be reached. Since the AI is entirely incapable of path-finding its way to you, it'll run about in circles like a caged hen, and be entirely unable to do anything. The only way this will fail to work is if you play against any human player who will simply copy what you did to reach the chamber, or hide out of view so you can't shoot them with whatever weapons you have access to. The AI does not have access to such a behavior, and may even continuously march towards you and fall off ledges in a desperate effort to somehow reach you as if the air will become a solid platform if it tries hard enough.
217** Bots in ''VideoGame/TimeSplitters2'' would ''never'' use their fists unless you turned weapons off entirely; they would rather waste time hunting for a harmless fire extinguisher to shoot you with instead.
218** Bots also have no idea how to use the pistol-whipping/rifle-butting option that all guns come equipped with. Playing as a fireproof robot character against an army of highly flammable zombie enemies with no weapons but flamethrowers is a masterpiece of VideoGameCrueltyPotential, as the zombies will crowd around you and futilely try to set your robot on fire, only to end up setting themselves and each other on fire instead.
219** Here's a fun experiment: Play Bagtag/Gladiator on the Zeppelin level in ''Future Perfect'' with all weapon slots set to Unarmed or Baseball Bat. Once you've secured the Bag/Gladiator's Armor, head to the roof and climb up one of the ramps the propellers are attached to. The AI will march single-file down the center of the zeppelin as if on a track before reaching a point where they turn and head [[TurbineBlender directly into the propeller you're standing behind]], with the bots coming from behind going ''past the ramp'' to do so. It's even worse if you're on one of the rear propellers; they will actually traverse the entire length of the zeppelin before joining the rest of the line. [[https://www.youtube.com/watch?v=dTcjL-IjBZA See it in action]].
220* ''VideoGame/{{Wolfenstein|2009}}'' has all the classic artificial stupidity bugs. Most notably, the enemy players will not react to you at all unless you are within a certain distance of them (at which point they will know where you are with unfailing accuracy) meaning that, once you've got the sniper scope, you can snipe groups from a distance and watch as the Germans show absolutely no reaction to their comrades' heads exploding.

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