History NightmareFuel / TheShapeOfTheNightmareToCome

* The Aeldari's extinction heralds the long-awaited birth of the Ynnari god of the dead: Ynnead. Before he is able to kill Slaanesh once and for all, however, the Dark Prince traps him inside the Webway, [[AndIMustScream forever denying him of the last hope his race ever had.]]

** His first words in several millenia (addressed to his killer, Cypher) are also [[FamousLastWords his last]]: [[MercyKill "End This"]].

** The birth of the Star Child, who by gorging upon the Astronomicon, eventually becomes the [[EldritchAbomination Star Father,]] [[OxymoronicBeing the Chaos God of]] [[LawfulEvil Order]].

** The birth of the Star Child, who by gorging upon the Astronomicon, eventually becomes the [[EldritchAbomination Star Father,]] [[LogicBomb the Chaos God of]] [[LawfulEvil Order]].

** The birth of the Star Child, who by gorging upon the Astronomicon, eventually becomes the [[EldritchAbomination Star Father,]] [[LogicBomb the Chaos God of]] [[LawfulEvil Order]] who will be elaborated upon further down.

** The release of the Void Dragon, who will also be elaborated upon further down.

** The Tersis was a ship filled with psykers that becomes lost in the deepest levels of the [[EldritchLocation Warp]], somehow came into contact with the Nex itself and emerges ''different''. "What lies within, we fear not ask" indeed.

One of the few fics that can claim to be a DarkFic for the franchise ''TabletopGame/{{Warhammer 40000}}'' The Shape Of The Nightmare To Come and its [[TheAgeOfDusk sequel]] are themselves chock full of nightmare fuel. Here are some of the highlights.

** The Astartes free companies - you know the TrainingFromHell that molded them into the infamous SuperSoldiers they are? Now imagine them set loose upon the galaxy with their ties of fealty released. The result: an unstoppable mob of psychopaths in most places and guns for hire in others, with little difference between themselves and their Chaotic brethren.
*** In their zeal, the [[KnightTemplar Black Templars]] decide that mankind has failed the Emperor and decided to wage a crusade against ''everything'', drawing Space Marines and Imperial Guard remnants they meet along the way.

* The Nex. Not much is known about it, but it lives deeper in the warp than even the Chaos gods, and just mentioning it's name causes the speaker to begin vomiting and speaking in an unknown language.

* Good god, the New Devourer. An ork/nid race that make it's two originators look fluffy and playful. In it's wake, the galaxy is mostly full of dead worlds because anything it came across it ate. Even targets the nids couldn't crack were easy meat. After accomplishing this, the New Devourer packed it's bags and left. Why? Nobody knows, but it's probably safe to assume it's really, really bad ''when the light from the galaxy they were last seen heading to starts fading.''

* Of the Petty Imperiums, the most obviously horrifying would be the theocratic ‘Ophelian’ Imperium. Beginning with the leader of the Ministorum fleeing to Ophelia and recalling the Sisters of Battle, the Government quickly begins a fanatical WitchHunt that only ends when a little girl is killed after kissing the feet of the Eccliesiarch.

** the Space marine free companies- You know all those things that are done by most chapters to make them into the infamous SuperSoldiers they are? Now imagine them loosed out into the world with their ties of fealty released and what do you get? An unstoppable mob of psycopaths in most places and guns for hire in others, with little diference between themselves and their chaotic bretheren.
*** The Black Templars in their zeal decide that mankind has failed the emperor and decide to go on a crusade agains everything, drawing marines from other chapters they meet along the way.

** His first words in several millenia (addressed to his killer, Cypher) are also [[FammousLastWords his last]]: [[MercyKill "End This"]].

** the Space marine free companies- You know all those things that are done by most chapters to make them into the infamous SuperSoldiers they are? Now imagine them loosed out into the world with their ties of fealty released and what do you get? An unstoppable mob of psycopaths in most places and guns for hire in others.

** The birth of the Star Child, who by gorging upon the Astronomicon, eventually becomes the [[EldritchAbomination Star Father]] [[LogicBomb the Chaos God of]] [[LawfulEvil Order]] who will be elaborated upon further down.