Angry Birds forces this trope into being, but that's somewhat the point, since the pigs stole the birds' eggs.
Even more so in the animations, where when a mosquito touches one of the eggs, the red bird crushes it to death. Repeatedly. In an additional animation, a butterfly simply brushes an egg... and gets crushed to death.
Kristoph Gavin in Apollo Justice: Ace Attorney hatches a plan to destroy Phoenix Wright's life after Shadi Enigmar, a.k.a. Zak Gramarye, a high-profile client, snubs him after a game of cards in favor of the less-famous attorney. His nefarious scheme succeeds for the most part, but his failure to dispose of two vital witnesses (thanks to dumb luck) resulted in him having to keep a paranoiac eye on all the people involved for the next seven years, making this a Disproportionate Retribution not just for its effects on the intended victim (Killing a client that snubbed you? Seriously?), but also in terms of how much time and effort he spent on it.
In Apollo Justice: Ace Attorney, there is a Values Dissonance where the inhabitants of Apollo's country think that it's disproportionate that cocoon smuggling is a capital offense in Borginia. Given that the cocoons can be used to make a large amount of a deadly poison relatively easily, the punishment may well be fitting, or at least less disproportionate, in many cases. Certainly not this case, though, where the cocoon is intended to make a cure for a rare and deadly disease.
In the 4th case of Phoenix Wright: Ace Attorney, Manfred von Karma shoots Gregory Edgeworth and later adopts his son (Miles Edgeworth) to raise him with the complete opposite ideals from what his father had. And to top it off, 15 years later, frame him for murder and have Edgeworth believe he killed his own father. And this is because Gregory gave Manfred one, and yes just one, penalty in court once and messed up his perfect record...
In Brass Restoration, an employee of a book store Ryo enters in Kouri's route points a gun at his head and attempts to kill him for not buying anything and for talking.
Call of Duty: Black Ops 2: As a result of his family getting repeatedly screwed over and then killed by the CIA, Raul Menendez enacts a decades-long plan in order to completely and utterly destroy the capitalist governments and economies of all First World countries, likely killing millions in the process.
Chrono Cross: The dwarfs believe their home in the swamp is doomed because of the Hydra's demise. How do they fix it? Genocide against the Fairies. And then they have the gall to blame you for making them slaughter innocent pacifists! There's a reason nobody likes that part of the game.
In Chulip, if you get three crime stamps (for smoking, being seen naked, and theft), you get chained to a wall crucifix-style, in a locked cell buried beneath the Graveyard, with people treating it as if you've died.
Dante's Inferno: A female prisoner offers herself up to Dante for sex in exchange for being freed from captivity along with her "brother" (actually her husband). Dante accepts and honors the deal, and in response, the husband kills Dante, travels all the way to Europe to find Dante's home, and kills Dante's father and lover Beatrice. Damn.
Three of the Psychopaths from Dead Rising 3 are willing to kill people over relatively minor slights. The man dressed as a monk who represents Wrath tries to kill anyone who makes any noise in his Zen garden. The morbidly obese woman who represents Gluttony brutally stabs a starving man to death with a giant spork just because he tried to eat some of the food from a buffet line that she was selfishly hoarding. The female bodybuilder who represents Pride gets so angry at Nick mistaking her for a man and repeatedly calling her "sir" that she tries to murder him.
Mao of Disgaea 3 claims to kill people who eat their eggs with salt and pepper instead of hot sauce (at least until he unknowingly destroys the embodiment of his love of hot sauce), and also wants to kill his dad for accidentally breaking his Slaystation Portable, making him lose 40,000,000 hours of gameplay time. Turns out his dad is already dead as a result of telling someone about his weaknesses shortly after the aforementioned event, that he's extremely upset by it, and that he's coping with the loss by denying it happened.
There's also Laharl from Disgaea: Hour of Darkness, he appears in Disgaea 2to drag Etna back to the Overlord's Castle, and if you beat him in the first battle, he BLOWS UP the world.
Valvatorez from Disgaea 4: A Promise Unforgotten launches a rebellion against the netherworld government because they were preventing him from keeping his promise of giving sardines to the prinnys he trained. Granted, there were actully very good reasons besides that, but that was his primary motivation. Valvatorez takes his promises VERY seriously, as if the title weren't a hint.
One of the major quests in Dragon Age: Origins involves an ancient curse that a vengeful elven leader inflicted on humans. After his son was tortured and murdered by humans and his daughter raped (and subsequently committed suicide), Zathrian was understandably enraged and sought justice. He bound the spirit of the Brecilian forest to a wolf, creating a savage creature that attacked and infected the responsible humans with lycanthropy. However, the curse lasted indefinitely and spread to many innocent humans, and the original criminals probably didn't deserve two hundred years of unbearable suffering.
Sebastian falls deep into this trope himself. If you refuse to kill Anders, Sebastian will swear to raise an army and burn Kirkwall to the ground... even though his real problem is with Hawke and Anders, not the innocent inhabitants of the city.Not So Different indeed.
Meredith had been driven to madness and paranoia by that blasted red Lyrium artifact, hence her reaction.
It can even be said that Anders intentionally invoked this. Anders knew exactly how Meredith would react to the Chantry's destruction and Elthina's death, and there was no way his plan to get the Circles to rebel would have worked without it.
In the first game, one of the major quests involves a dispute over the dwarven crown between Lord Harrowmont and Prince Bhelen. If the player chooses to help Bhelen become king, then Harrowmont is executed. While a dick move, it is explainable in that Bhelen needed to solidify his power base... except that Bhelen didn't stop there. The sequel reveals that Bhelen ordered that Harrowmont's entire family be killed as well. Only one survived and fled the country, dodging Bhelen's assassins at every turn. If Harrowmont becomes king, even after Bhelen is killed, his supporters continue to rebel against him, undermining his rule and making his reign a failure.
Dwarf Fortress kobolds are considered by much of the fanbase to be woobies, because their main reason for living is to wander into your fortress and pilfer a few things. The main response of your dwarves? Rip them in half. The imports/exports screen explains that they offer "petty annoyance" in return for "death". Someone here is getting shafted.
Eagle Eye Mysteries: The Original, Book 2, "Case of the Crazy Compass": Dave Grant slips a magnet into Alex Hane's backpack right before Alex is scheduled to go into the woods with his exploring club. Said magnet is so powerful that it disrupts Alex's compass badly enough to get him lost in the woods for hours, in the process ruining his chance to get a good grade for his explorer club and also (in hindsight) exposing him to the inherent dangers that come with being lost in the woods — and Davedid thatwith full knowledge that Alex would be going into the woods. And his reason for all this? Alex's science project came in first place ahead of his own.
This is averted in The Elder Scrolls II: Daggerfall in which you always get a trial in which you can defend yourself, or have the Thieves Guild or Dark Brotherhood intimidate the judge into letting you go if you belong to those factions.
The Ordinators in Morrowind. Woe betide anyone who wears one of their helmets in their presence.
Though on the other hand, Vivec has been left an Ordinator mass-graveyard several times because one of them showed exceptionally poor judgement in calling the Nerevarine "scum". For that matter, the "Outlander" insults wore rather thin rather quickly too. A side-effect of being NPCs in a world where the player-character can effectively gain godlike powers with little effort.
In Morrowind, you can get kicked out of a few organisations by simply trying to rest in the wrong bed, sometimes permanently! Especially annoying with Tribunal Temple.
Also, a book found in Oblivion talks about a bard who made a comedic ballad about a certain general. How did the general react? He had the bard mounted on the front of a battering ram being used in a castle attack!
In Skyrim, stealing a sweetroll or killing a chicken can result in the offended party sending a trio of hired thugs to kill you.
In Emily Enough, the eponymous character has all rights to her story stolen in a scheme where she was promised release from the asylum she was held in as bait. She decapitates the person responsible off-screen during the game's ending. To be fair, they were Too Dumb to Live, as before the game starts, she killed her parents and servants for less.
Fable II has assassination missions where the reasons for the assassinations include "He thinks he's so funny", "very overdue library book", "selling chocolates half-eaten", and "random draw for the week."
Fallout 3: "Oh My God! The doctor just left the Vault! Oh! I know! I'll have his assistant killed, plunge the Vault into mayhem, cause many more deaths, forcefully interrogate my own daughter, and sic my men to go shoot the doctor's childon sight! That'll show him!" On the other hand, the Overseer is a massive control freak and has a Vault-sized ego. The sheer act of opening the vault doors to leave must have insulted him so much he simply lost his shit.
Vault 101 is officially listed as one of the "Experiment" Vaults, the experiment being "Control freak Overseer with much more outright power than the other vaults".
Also in Fallout 3, Allistair Tenpenny wants to blow up the small town of Megaton. Why? Because it blemishes his view of the wasteland. (Think that over for a second)
In Fallout: New Vegas, everyone sees what the NCR did to the Khans at Bitter-Springs. For those that don't know, the Khans started harassing NCR caravans. The NCR then sent a massive army and killed most of them, many who were unarmed and trying to run away.
The Khans actually led a Raider-worthy campaign of attacking caravans. They didn't harass them, they annihilated them if they resisted and butchered NCR troops that fought back. The resulting Bitter-Springs battle was wiping out an enemy encampment: the massacre of Khan civilians was either a tragic error or a cruel order, but a lot of NCR troops that participated in it regret it. But gunning down opportunistic raiders? Just life in the Mojave.
Both games have examples of horribly disproportionate retribution by the AI. If you so much as take a TIN CAN from their property, some NPCs are prone to react with lethal force. And should you turn off the King's radio... a crime punishable by death by a gang.
Letting people in Cavavans go if they don't fight counts as harassing in the Fallout world.
Jeannie Mae Crawford really didn't like Boone's wife, because the girl thought Novac was a dump and wanted to take Boone to New Vegas instead. So she arranged to have both the girl and her unborn child sold into slavery to the Legion. Once you find out about it, it's immensely satisfying to arrange for her to be shot by Boone.
Get tired of those NCR troopers wishing for a Nuclear Winter? At the end of Lonesome Road, you can give them one.
Hell, the NCR aren't shy about this trope one bit. Steal trash off the floor of the cafeteria and the whole of Camp McCarran will descend upon you like the wrath of an angry god. It's explicitly said that they hate being the police force of the Mojave, so they decree that any and every crime is punishable by death.
In the game Watch_Dogs, Aiden Pearce's quest to get vengeance for the death of his niece is actually a satirical look at the vengeance plot. The chaos and violence is played up to a ridiculous degree after about the halfway point of the main storyline, examples being; nuking the power grid of Chicago, kidnapping and torturing the man who accidentally killed his niece, completely ruining the lives of many people, including his only family, the list goes on....
Final Fantasy Tactics A2 has a mission involving this. The Lang Bros. (back when they were with the Arbiters of Death) were enjoying drinks at a bar when something causes the drink to spill. One of the brothers ganked the guy responsible, and when others came to restrain them, they subsequently got slashed. Then the Arbiters of Death themselves got involved, and were shanked for their efforts. All of this gone over in detail to Clan Gully. There's Serious Business and then there's this.
Luso: You knifed nearly thirty guys over a spilled drink?! You're a threat to society!
In the first disk of Final Fantasy VII, the rebel group AVALANCHE infiltrates and destroys two Mako Reactors. AVALANCHE consists of Cloud, Barrett, Tifa, Wedge, Biggs, and Jessie. 6 people. What does the Shinra Corporation do? Crash a sector of the city onto them while framing them for it.
And they failed to kill half of the group. Indeed, at least 2 of the 3 were killed by Shin-Ra soldiers before the plate came down (as they tried to prevent Shin-Ra sabotaging the plate support).
It's worse than that. Barret had taken over the reigns of AVALANCHE because his hometown was burned down by Shinra... because one of their reactors there exploded and there was ONE person in the town who had been against the reactor being built, and he wasn't even home at the time. So if you trace it back far enough and take the total death and destruction totals into account, the Shinra corporation killed several villages worth of people because one man once said that Mako reactors were a bad idea.
Sephiroth himself. "I was born because of a Shinra experiment? Whelp, time to go on an omnicidal rampage, smash a meteor into the earth, and absorb millions of innocent souls to become a god."
Sephiroth's later actions including the Meteor thing are not for the sake of retribution, but due to the god complex he developed in the intervening years. His actual act of retribution upon discovering that he was an experiment and an abomination? Massacre the village of Nibelheim. Massacring villages seems to be a theme in this game.
Karma really is a bitch in the Dark Side ending of The Force Unleashed. Instead of helping Kota, Galen gives into his desire for revenge against Vader and after winning, still tries to help Kota, so really, he's not even evil, he just had a moment of weakness. The result? Palpatine kills everyone except Galen, whom he crushes with his own ship and then rebuilds into his apprentice, promising to discard him the moment he outlives his usefulness. Considering how you get away scot-free in other morality Star Wars games such as Knights of the Old Republic, it does seem like Starkiller is something of the universe's Butt Monkey.
In Galactic Civilizations, there's some background history about a race called the Xendar. Manipulated by another race, they attacked a Human colony world - a minor one. The Humans retaliated with an all-out galactic campaign of destruction that all but annihilated the entirety of the Xendar race.
Said "another race" are actually the Drengin. After humans went from "no military to speak of" to "huge fleet" in a matter of months in order to destroy the Xendar, the Drengin freaked out, being the only alien race to recognize the danger of humans.
Really, Ares' dickery only snowballs into a brutal battle that probably levels half of Athens, which was going to be destroyed anyway. Zeus killing Kratos results in the rest (which is still Disproportionate Retribution on Kratos' part).
In Grand Theft Auto IV, Niko's responses are more or less proportionate to the wrongs inflicted, but one of the talk show hosts is not so discriminating.
Bas Rudden (as himself)"Bas doesn't believe in an eye for an eye. Oh no, Bas believes in an eye for two eyes. Or maybe two eyes and an ear. Or two eyes, and an ear, and a spleen, and maybe a new shirt because this one is coveredIN ENTRAILS!"
In the "Deconstruction" mission of Grand Theft Auto: San Andreas, CJ finds out that some construction workers have been calling his sister Kendl a hooker. CJ's response is to head over to the construction plant to "teach them some respect." How does he do this? He smashes up their portables with a bulldozer, and then traps the foreman in his own porta-potty, pushes it into a hole in the ground with the poor bastard still inside, and then commandeers a cement mixer and uses it to bury him alive. And all the while he's doing that last bit, the poor guy is screaming "OH GOD, WHY?!"
In Grand Theft Auto V, there are a few examples of this trope:
Apparently Michael de Santa's response to catching the tennis coach sleeping with his wife is to drive to a rich house he thinks is owned by the tennis coach and pulling the whole thing down by the beams of the deck.
Trevor Philips had just learned that Michael had been lying to him. Turns out Brad is dead, and Michael ratted out to the feds ten years earlier. Response? Trevor abandons Michael to be tortured by Mr. Cheng and his men.
Let's not forget what happens during one of Trevor's rampages. As Trevor is walking through Los Santos he comes across some soldiers. The soldiers notice Trevor is Canadian and start to make fun of his accent. Trevor's response? Grab a freaking grenade launcher and blow away any soldiers that come across him.
In Homeworld, the protagonist race builds a mothership, takes it on a test drive, and comes home to find their planet incinerated and 300,000,000 people dead. Why? They violated a 4000 year old ban on interstellar travel, which they weren't even aware of.
The Homeworld case has some interesting Fridge Logic. The planet was being watched carefully for 4000 years to be attacked the moment the inhabitants tested a stardrive... but not closely enough to tell that the civilization had long since forgotten they were prisoners in the first place, or destroy the mothership before they could test it.
In Jet Set Radio and Jet Set Radio Future, the response for some errant graffiti is initially little more than police shakedown. Just a few levels later, though, the police start sending tanks, mecha and later a private trenchcoat-wearing assassination force. When that doesn't work either, they decide they're going to burn a section of the city to the ground just to draw you out.
In between chapters, DJ Professor K tells a story of how Captain Hayashi freaked out and trashed a patrol car. And why, you may ask? Because he sent another officer to get his favorite mint candy, and came back with coffee flavored instead.
In Kingdom Hearts II, tampering with Ansem's computer, even by accident, will result in you being zapped into the computer itself and then thrown in it's prison, while the power is cut off, preventing you from escaping through a terminal. And, according to the manga, your punishment is death.
And in Kingdom Hearts 3D [Dream Drop Distance], Riku's reaction to being tripped over, and tapped on the back, by a Holey Moley is to kill it, muttering that "they just never want to make this easy".
The plot of Kirby Squeak Squad is kicked off by having a slice of cake stolen from Kirby. He automatically assumes it's King Dedede's doing and proceeds to raid his castle and beat him up over it, then spends the rest of the game chasing the Squeaks across Dream Land when he realizes they're the true culprits.
"You DARE bring LIGHT into my LAIR?! YOU MUST DIE!"
In Liberal Crime Squad, when death penalty laws goes Arch-Conservative, any crime is punished by death penalty. Murder. Arson. Kidnapping. Assault. Vandalism. Disturbing the peace. Loitering. And if you add Arch-Conservative police regulations law, the death penalty is no longer applied, because the Death Squads will execute any criminal caught on the spot. Without trial.
According to Javik in Mass Effect 3, gambling was punishable by death in the Prothean Empire. However, Javik is a confirmed Troll, so take it with a grain of salt.
Mass Effect 2 potentially features an inversion at the end of Thane's loyalty mission. His son Kolyat tried to assassinate an extortionist, anti-human political candidate. The Paragon route through the mission is to save both lives, then talk C-Sec Captain Bailey into offering community service as Kolyat's punishment for two attempted murders (the candidate and his bodyguard). Bailey is understandably incredulous, but Shepard convinces him.
When the Alliance made First Contact, it was with the turians. A turian patrol vessel stumbled across some human explorers trying to activate a dormant Mass Relay, which is rather understandably a crime in Citadel space after asari explorers accidentally unleashed the Rachni on the galaxy. When this happened, the turians hailed the human ships, and attempted to explain the situation and the laws that they had no way of knowing about... Ha ha, nope, they promptly blew the humans away, then happily went to invade the first human colony they could. Only a narrow stalemate and asari intervention prevented the turians from going Total War on the Alliance.
Arguably, the titular hero from Max Payne is guilty of this, though to be fair, he was really only after three people (four, if you include Gognitti), and everyone else just didn't have the sense to get out of the way. And B.B. was stupid enough to GET IN THE WAY ON PURPOSE.
In a special movie for Metal Gear Solid: Portable Ops Plus, a Yellow Genome Soldier ends up winning a race despite the fact that not only was the race meant for GA-K Os and not humans, but he was supposed to act as a referee/race starter. Campbell and Raiden, under Old Snake's command, then repaid him by shooting two RPG-7s at him while he was savoring the victory.
On a more serious note, it's hinted that Julie Emmerich thought that the correct response to being neglected by her husband was to seduce/sexually abuse his 14-year-old son. This ends up driving him to suicide, but that was probably unintentional.
In Monkey Island 2, the game (nearly) ends with Guybrush maiming LeChuck and pulling his mask off Scooby-Doo style to reveal...his brother, Chucky! You can ask him one of two questions regarding his motivation for hunting and torturing you relentlessly across two games. One of the questions garners the response that when you were both children, you stepped on and broke his favorite toy.
In Curse of Monkey Island, Captain Blondebeard stabbed a patron in the back for complaining about his chicken.
Played for laughs in theThe Nameless Mod. In a side mission for the World Corp storyline, you have the option of helping Zero Presence assassinate a priest later in the game. The reason for the hit is because the priest has tried to steal Zero's pork chops multiple times.
The entire premise of Need for Speed Hot Pursuit (2010) is this. What's that? You're driving 2 miles over the posted speed limit? Prepare to have your vehicle's electronic systems jammed up so you'll be forced to drive over a spike strip so the police can push you off the edge of a cliff. That'll teach you a lesson about speeding!
What's that? You ARE driving at the posted speed limit? CALL IN THE HELICOPTERS!
Lot of the actions your crew does in PAYDAY: The Heist is questionable at best, but one thing they do during Diamond Heist is downright unnecessary. If the codes to the vault fail, you are then told by your supporting heister that you need to capture the CFO so he can use him as a bargaining chip with the CEO to get the codes. Sometimes, the CEO refuses to negotiate and doesn't care what happens to the CFO. What does the crew do next? Kick the CFO out of the helicopter and have him crash land through a glass dome before smacking into the floor. All of it was done just to show the CEO that your crew isn't messing around and this is done before you go hunt down the CEO's son, something that could have been done without killing the CFO.
Remember Future Luke, a.k.a Clive, the adorable kid from Professor Layton and the Unwound Future? Yes, the one who created a gigantic underground futuristic version of London, built a giant robot, put up a great farce, and tried to blow up the real London only because his parents died in an unfortunate accident. He attempts to justify it by saying that it's teaching the government not to callously disregard ordinary people (since Bill Hawks managed to not only avoid responsibility for his failed time travel, but reached high office).
Red Dead Redemption: A somewhat heroic version of this: Remember how in the beginning, you were shot in the first attempt to enter Fort Mercer? Well, now, you go in with a gataling gun and proceed to blast Williamson's men into peices.
Another example from this game comes at the very last mission Remember My Family. You don't have to kill just Ross. You can kill both his wife and brother in entertaining ways before finally going to deal with Ross himself.
During one mission of Ride To Hell Retribution the protagonist Jake has to overcome an obstacle in his way. So he runs up to a bunch of innocent truckers. Kills them. Steals their fuel truck. Drives it across a highway killing several dozen policemen trying to stop him. Drives it into a power plant. Kills the innocent workers there and blows up the truck to destroy the plant. What obstacle requires such a massive mass murder? A 2 meter high electric fence in front of a farm.
Also the big reveal at the end of the game on why the leader of an opposing biker gang wants Jake's family dead and has send legions of his goons after him? He didn't like his father.
In Robopon, in the second game, Cody accidentally helps flood Delica Kingdom with a fishing rod. The punishment? Death by hanging. If not for a conveniently-placed time machine, the game would end there.
Saints Row 2's Brotherhood missions, full stop. Worse, it's pure tit-for-tat Disproportionate Retribution. From peace talks where Maero, the Brotherhood leader, offers Boss a 20/80 split out of respect for his accomplishments (as well as a realistic appraisal of the situation in light of Boss' fall from grace,) Boss spits in his face and declares war over the implied insult. Boss opens by injecting Maero's tattoo ink with radioactive waste, Maero escalates by dragging Boss' second-in-command to death behind his gang's trucks, Boss then ruins Maero's rocker friend's career by burning his hand with a pyrotechnics display and locking Maero's girl in the trunk of her own car, then putting it last in a line of cars Maero would later crush with his monster truck. He even stays to gloat, tossing Maero the keys to the car just as the ganglord recognizes it. And all of this only comprises about half of the Brotherhood missions.
In Saints Row: The Third, Zimo's apparent forgetting which of the two DeWynter sisters he slept with was enough for him to spend who knows how long saddled up in a human pony show.
A lot of the assassination missions are this. Some clients want the target dead for playing music they dislike near their favorite club or being better than then at a video game.
Saints Row IV: Yes, Zinyak, blowing up the Earth along with seven billion inhabitants is a totally justified response to the Boss escaping the simulation hellhole you put him/her in.
They also torture Leonard and then keep him tied up in their cupboard feeding him only spiders for two seasons for stealing a sandwich.
From the comics:
Bartender: (To Sam) It's for you, McGruff.
Sam: (To Max) "McGruff"? Did you hear what he just called me? I hate that! Let's sneak into his room at night and drain all the fluids out of his body.
Sharin No Kuni: the opening of the game has the main character witness female trainee get shot through the head for arriving late to an exam, and that's just the beginning.
What's worse is that she really should have known that would happen. Everyone undergoing that training is supposed to have been living with that threat for years. It's also implied in the endings that the shooter in question is egging Ken on since Special High Class Individuals or whatever is a pretty easily abused system.
In any Sim game, you can set your Sims on fire or drown them just for not getting to a specific area immediately.
More specifically, sometimes, completely at random, the sky will get annoyed at you for attempting to gaze upon it's clouds and drop a satellite on your Sim. This can happen the first time you do this.
In Snatcher, Gillian Seed's marriage to Jamie, the woman Elijah Modnar was in love with, causes him to cryogenically freeze Gillian with the intention of leaving him there forever, and to wipe out half of the world's population with a designer virus.
Similar to the above example, Star Wars: Bounty Hunter has a number of extremely harsh sentences for minor offenses. As the bounty hunter Jango Fett, the player runs through a handful of locations tracking down bounties or sources of information in his overall mission. Mixed in with the enemies and bystanders are minor bounties, wanted dead, alive, or either. Some of them are real scum: murder, arson, kidnapping, political assassination, etc. Some are not: bounties that are wanted dead (including those wanted dead or alive) include a Gamorrean who killed the animal he threw as part of a competition, a Jawa who is begging outside of a shop owner's store, a Gran who painted slang on some transports, and perhaps the best example yet: a death sentence posted by Sebulba on a man for betting against Sebulba in a podrace.
In Super Mario 64, the Killer Corner glitch is only one of many examples of this happening. Specifically, don't even think about stepping out of bounds, or else that hat won't be the only thing Mario loses (though he'll regain it after respawning in the designated "mission failed" area as he usually does following the Bowser Iris Out of Doom).
In one of the scenarios in Wargame: European Escalation, an East German Border Guard defects to West Germany. He kills two of his fellow border guards in the escape. East Germany wants him back. West Germany says no. Enter World War 3, stage East.
Yandere Chan: What's that? You've forgotten Mia's name? Oh... that's so cruel. So cruel that you deserve to be stabbed to death for it! Are all people as unbelievably cruel as you?
Your cruelty extends beyond that; you want to share lunch between Mia and your other four friends? What's that? She poisoned you? Serves you right.
You decided not to have lunch with Mia at all? You ought to be stabbed and thrown out a window for your heartlessness!
The Western-themed 1866 for Mount & Blade features bounty hunting quests triggered by Wanted Posters, requiring to capture or kill a suspect. The posters mention their crimes, which include "chewing gum in line" and "spitting on somebody shoes".
The plot of this flash game in a nutshell: a vending machine takes your coins without giving you anything in return. You respond by unleashing a dozen beat-em-up's equivalent of whoop ass upon it.
After a developer of video games, Silicon Knights, sued Epic Games over problems with the Unreal engine, Epic countersued for infringement of their Unreal 3 engine, and it ended with Silicon Knights virtually being ordered to be shut down. No kidding. All the gory details of the outcome can be found here. Particularly noteworthy because this is the first time a video game's source code was wiped due to a permanent injunction.