Please don't list this on a work's page as a trope. Examples can go on the work's YMMV tab.
Nightmare Fuel: The Hunger Games
The Hunger Games, a series of books and a film about children murdering each other for the entertainment of the elite and a threat to the oppressed. You'd better believe there's heaps of Nightmare Fuel.
Spoilers below, and remember: don't step off the platform too early.
The Games themselves are this. These books do not skimp on the terrifying deaths.
Towards the end of Mockingjay in the sewers when Finnick is killed by mutts.
Throwing teenagers into a death match is bad enough. But turning them into celebrities beforehand, putting them into social situations where they even eat with the people they will eventually kill or be killed by, and even forcing those from the same District to fight against each other, destroying any camaraderie or prior relationship they might have is just plain monstrous. And that's not even getting into what happens to the victors after the Games.
Some of the ways the rebels, including Johanna, Darius, and Lavinia, are brutally tortured in Mockingjay, which include cutting off people's body parts one by one until they are dead, delivering electric shocks to the rebel until they have died, and drowning the rebel in water and then electrocuting them.
Cato's death, where his flesh was devoured by mutant wolves made out of the bodies (or minds) of the deceased tributes.
Let's not forget that he was alive the whole time for hours while this all happened to him. He was suffering for an entire night until Katniss shot him out of mercy, not hate as it had been up until that point. But to make matters worse, she and Peeta sat on the Cornucopia waiting for him to die slowly and painfully, just so the people in the Capitol would have their sick show of violence. Only when Katniss couldn't bear it anymore did she do something about it.
It was probably more that she didn't realize that, even with the armor, it would take that long for him to die. Plus, she didn't have a clear shot at him before he and the mutts came out of the Cornucopia. But either way, still one of the most horrifying things I have ever read.
And if the mutts really were made out of the dead tributes' body parts as opposed to just looking like them, then Clove, Glimmer, and Marvel—his allies—also killed him, and he was reminded of them right before his death.
"Tick, tock." There is something deeply unsettling about the whole "the arena is a clock" idea.
The Hanging Tree song.
"Are you, are you, coming to the tree... Wear a necklace of rope, side by side with me..."
Katniss' explanation of the song doesn't help.
Glimmer's face being melted off from the tracker jacker venom.
The giant lizard mutts in the Capitol in Mockingjay. Even before the reader sees exactly what they can do, they're described to smell like blood and roses (Snow's signature scent) and are able to say the word "Katniss" in the most frightening way possible.
Many of the "pods" in Mockingjay. Particularly the one that does in poor Messalla. His flesh melted off like a wax candle.
The horrific hallucinations shown by the tracker jacker venom involving ants crawling onto the main character.
Catching Fire features a fog that burns your clothes and skin, paralyzes you, and if you are completely submerged, makes you have seizures and die, as sadly demonstrated on an 80-year-old woman.
The way she decided that dying was the thing to do at that point and just walked into the fog was awful.
The creepy white giant lizard muttations in Mockingjay. They smell like a horrific combination of the blood of their victims and the sickeningly sweet fragrance of President Snow's signature roses. Oh and they maul and dismember anything in their path, even Capitol citizens, to get to Katniss.
They also hiss Katniss's name, and that's what she hears before she ever even sees the things...
For that matter, any of the endlessly inventive ways of killing people that the Panem scientists have invented - during "Mockingjay", it's clear that the Capitol prefers psychological warfare to flat-out annihilation of opposing forces, even though it's clearly capable of the latter.
Why hasn't anybody mentioned the fact that many victors, not just Finnick, who are very attractive end up as prostitutes in the Captiol. If they refuse Snow kills their loved ones. It's just horrible...
President Snow himself. Think about it. His rise to power was mainly due to one thing, poison. He would kill his enemies and even some of his allies. But the most horrible thing is that he would even drink from the poisoned cup himself and his mouth would bleed. That's why he uses roses, to cover up the stench.
The hijacking. Both what it does to the victim and what it does to Katniss. The idea of seeing someone you love, who has always loved you, suddenly hate you and have warped memories of many of the significant things you've shared is terrifying.
Primrose's death in Mockingjay. She was burned alive and in front of her sister, Katniss.
"By the way, I know about the kiss." Also Paranoia Fuel, because HOW does he know? And how did the Peacekeepers know Katniss went into the woods that time, so they turned on the fence? Was it cameras, spies? And how long has the area been monitored? Did the Capitol know about Katniss, Gale, even her dad hunting, but just didn't care until she became a Victor , the Mockingjay, and a threat? Or has she only been watched since then? Katniss never actually finds out, so neither do we.
The jabberjay section of the arena in the Quarter Quell. If you get trapped in there, you just have to sit there and take it as you're bombarded by the agonized screams of your loved ones...for an hour. Even when you realize that the screams are just fabricated, it's still some serious emotional torture to have to listen to that.
The third Quarter Quell in general. Winning a Games, which would be traumatizing enough as it is, and then settling down to a regular life, knowing that at least you're safe from having to fight again no matter how bad things get. Then, all of a sudden, this belief is torn from you, and you have a definite chance of being reaped into an arena where you have to fight and kill your friends out of some desperate need to survive. It doesn't matter if you're senile, hard-of-hearing, addled by drugs, or if you have a family you have to leave behind. If you are alive, you can be picked. How's that for Paranoia Fuel?
It's mentioned that a previous tribute went insane, and started eating the others.
The section of the Quarter Quell arena that Johanna, Beetee, and Wiress got stuck in after Blight was killed. They got stuck in a downpour of hot, thick blood, and they could not escape it. This lasted for a whole hour. It got in their mouths, their eyes, everywhere, so that they're all completely red when they meet up with Finnick, Katniss, and Peeta. And we have no way of knowing if the blood was artificial (this is the Capitol, after all), or if it was actual blood, human or animal (again, this is the Capitol we're talking about).
The fact that the children who were behind the barricade happily took the parachutes, believing them to have food or gifts, and were brutally murdered. Some of them did not even die; no, they were only mutilated. And then Prim and other rebel medics came in...and a second set of explosions went off, killing them too. All of this happened on Coin's orders. And Katniss ended up seeing the entire thing in person.
Had Katniss not murdered Coin, it's entirely possible that there would be more Hunger Games set up for the remaining Capitol children. The fact that so many people in the districts immediately wanted to inflict the horrors of the games on children for revenge in just chilling. Fortunately, that does not happen.
Mockingjay is filled with these. At one point, Katniss witnesses a group of Capitol refuges get mowed down by rebels, who were apparently aiming at the Peacekeepers. She sees a little girl in a yellow coat, one who had just seen her face scant minutes before, sobbing over the dead body of her mother. More bullets rain down, tear through the little girl, and she dies instantly. Katniss is so horrified she can't even speak at first.
The twist of the very first Quarter Quell. The Tributes were voted on by the people of their own District, likely by their own neighbors, friends, and possibly even family members.
Gale's desire for revenge in the third book. He desires revenge so much, that as the rebellion drags on he becomes willing to commit atrocities just as bad as those committed by the Capitol. At first he builds snare bombs which are designed to kill medics and noncombatants, but it his bloodlust soon culminates in him causing an avalanche in the Nut which kills thousands (not just peacekeepers, but also civilians and rebel spies). He knows that there are civilians and spies in the Nut, and not only does he not care but in fact he also wanted to BOMB THE ESCAPES to ensure nobody survives. The fact that he survived the bombing of District 12 actually makes this worse, as he knows how wrong it is to kill civilians but he still does it.
Snare bombs designed by Gale end up being dropped in the final battle, killing Prim as well as a hundred other innocent children.
Cray. When starving girls in District 12 are desperate, they end up sleeping with him in exchange for a few coins. Katniss even says that this could have happened to her if she did not know how to hunt.
What destroyed civilization before Panem was founded?
When the mutts first appear in the arena in the movie. All you see are Peeta and Katniss running together through the dark woods, then the mutts jump out at you from NOWHERE. One can only imagine if that was in 3D...
The mutts were scary period. Not just the moment they appeared.
All the other incidents of violence — the mutts, Thresh and Clove, Glimmer's death — are all either really violent so as to be almost unbelievable, covered up with a Jitter Cam, or not particularly scary, like Rue's death by spear or Foxface's poisoning. The death of the District 3 boy is so senseless, happens so quickly and is done with such little emotion that it's shocking.
The Career tributes, Clove and Cato in particular. One of the most disturbing scenes is after Katniss's leg has been burned and she's soothing it in the lake. The disturbing part: They're glad that they're about to kill somebody. This is also Fridge Horror when you realize that these people probably reflect their districts.
Movie!Glimmer came off as scarier to this troper than Cato or Clove due to the fact that while those two always came across as alway Axe Crazy, Glimmer acted disturbingly like a normal teenage girl at times which made her creepier.
Toss in just a moment before - the Gamemasters had run Katniss right into them. Senaca's thoughts: "Get a cannon ready" - and then exchanges a smile with the operator.
The Tracker Jackers. Everything about them, from watching them swarm around Glimmer as she screams to Katniss's hallucinatory run from them, is terrifying. And they're actually Lighter and Softer compared with the book, where they inject enough venom into Glimmer to melt her face off.
The venom didn't melt her face off. Katniss eventually realizes that the disintegrating, which she saw happen to her arm, was probably a hallucination. And as for the eradication of her features, that was the result of the huge lumps from getting stung.
The screams of the girl who lit the fire. And still she gets off easy in the film - in the book she was tortured for an undisclosed period of time and then had to be mercy killed by Peeta.
She wasn't tortured for any length of time, she was just dying slowly, probably bleeding out, after the Careers left her. Then Peeta went back to end it. Still worse and more drawn out than how the movie did it though.
In District 8, dozens of badly burned bodies are lined up by the entrance to the hospital. Katniss sees them on the way there, and is visibly trying not to break down.
Peeta's detoriating physical state is horrifying to watch.
Peeta attacking Katniss comes completely out of nowhere. First of all, Peeta looks heart-wrenchingly bad: you can see the abuse on his malnourished body and face, and in his eyes. Then, he starts choking the life out of poor Katniss, throwing her across the room as she struggles. What really sells the horror is Katniss' genuine surprise as her eyes bulge out, and for a moment the audience is truly afraid that she will die.
Peeta thrashing about in his cell at the end.
The attack on the hydroelectric dam. There had to be at least a couple hundred people, and every single one of them perished in what was essentially a suicide bomb attack.