History GoneHorriblyRight / TabletopGames

* In the Clan Invasion storyline of ''TabletopGame/{{Battletech}}'', this trope struck the Crusader Clans ''hard'' when, in an act of political spite, demanded that Clan Wolf (their greatest political rival and most powerful of the Warden Clans) [[ForcedToWatch be given the 'position of honour' during the invasion of the Inner Sphere]]. The Khan of Clan Wolf then decided that if he was going to be forced to take part in a war he had fought so hard to avoid, he was going to make sure Clan Wolf gave the Crusaders ''exactly'' what they wanted and consequently spent years prepping Clan Wolf -- and especially their logistical core -- for the invasion in every way he could. When the Clan Invasion finally kicked off Clan Wolf subsequently left all the Crusaders, [[HomeByChristmas who had assumed the Inner Sphere would roll over and surrender immediately]], in the dust and cut a swathe towards Terra that forced the Crusaders to repeatedly overextend their lines in an attempt to catch up. As a result the Clan Invasion ground to a halt as the Crusader Clans were unable to hold the territories they had rushed to conquer and their logistics core couldn't catch up to their front lines.

* ''TabletopGame/GURPSBanestorm'' has this as the setting's origin story. Centuries ago, a group of Dark Elves attempted to summon a bane that would exterminate the Orcs once and for all. The spell backfired, summoning numerous races to the world ... including humans, who drove off the Orcs but proved to be a greater long-term threat since they're organized, intelligent and prone to plowing under the wild places that the Elves love.

** Said "turning" is the perfect example in itself. Our larger-than-creators-of-the-world god-kings, who smite evil spirits, demons, forces of death and of outside chaos with but a little exertion and a lot of flair, who create and wield unimaginable wonders, have gone bit crazy and rule like despots. We're lesser yet capable and much more of us. Let's kill them and imprison their force-"soulsystems" forever! BAM BAMM BAMMM DONE! Uff, victor... errm... who are these evil spirits, demons, forces of death and outside chaos all advancing on us? And how do we keep that wonderful machinery we came to rely on - maintained and operational? Retreat, retreat!

** Said "turning" is the perfect example in itself. Our larger-than-creators-of-the-world god-kings, who smite evil spirits, demons, forces of death and of outside chaos with but a little exertion, who create and wield unimaginable wonders, have gone bit off the rails. We're lesser yet capable and much more of us. Let's kill them and imprison their force-"soulsystems" forever! BAM BAMM BAMMM DONE! Uff, victor... errm... who are these evil spirits, demons, forces of death and outside chaos all advancing on us? And how do we keep that wonderful machinery we came to rely on - maintained and operational? Retreat, retreat!

* A pretty common occurrence in TabletopGame/MageTheAwakening, especially when you are using fate magic. Honestly, given how most of the downsides of the use of arcane power are indirect (your enemies can find you, spirits take notice of you, things going right tempts you to be just a little more ambitious next time...) and how fond the setting is of the law of unintended consequences (several of the other splats have potential origin stories starting with "one day a bored mage thought he'd try..."), "gone horribly right" is essentially the unofficial slogan of the series. It gets more and more direct and prominent depending on the creativity of your ST, especially if you give him the opportunity to play with ExactWords by interacting with spirits, the dead, compulsions, the fae....
* TabletopGame/MageTheAscension had this as a backstory element for the game as a whole; back in the Medieval period, a Tradition of [[MagicPoweredPseudoScience Science-Mages]] called the Order of Reason decided they had to take over the Reality Consensus for the sake of humanity, which suffered due to the almighty power of the {{Sorcerous Overlord}}s of the other Traditions. It worked, making Science the truth and Magic a fiction. What went wrong? Well, two things, really. Firstly, they ended up stifling human imagination ''in general'', causing their own "hyperscience" to become as unreliable as conventional magic, and making it increasingly difficult to recruit people. Secondly, they ended up sliding down their own slippery slope, starting to become almost as bad -- and sometimes worse -- than the Traditions they overthrew. This eventually culminates around Revised Edition, where the Technocracy have effectively won the Ascension War... only to find they haven't encouraged ingenuity in humanity, but apathy.

* TabletopGame/MageTheAscension had this as a backstory element for the game as a whole; back in the Medieval period, a Tradition of [[MagicPoweredPseudoScience Science-Mages]] called the Order of Reason decided they had to take over the Reality Consensus for the sake of humanity, which suffered due to the almighty power of the {{Sorcerous Overlord}}s of the other Traditions. It worked, making Science the truth and Magic a fiction. What went wrong? Well, two things, really. Firstly, they ended up stifling human imagination ''in general'', causing their own "hyperscience" to become as unreliable as conventional magic, and making it increasingly difficult to recruit people. Secondly, they ended up sliding down their own slippery slope, starting to become almost as bad -- and sometimes worse -- than the Traditions they overthrew.

* ''TabletopGame/GURPSBanestorm'' has this as the setting’s origin story. Centuries ago, a group of Dark Elves attempted to summon a band that would exterminate the Orcs once and for all. The spell backfired, summoning numerous races to the world … including humans, who drove off the Orcs but proved to be a greater long-term threat since they’re organized, intelligent and prone to plowing under the wild places that the Elves love.

* ‘’TabletopGame/GURPSBanestorm’’ has this as the setting’s origin story. Centuries ago, a group of Dark Elves attempted to summon a band that would exterminate the Orcs once and for all. The spell backfired, summoning numerous races to the world … including humans, who drove off the Orcs but proved to be a greater long-term threat since they’re organized, intelligent and prone to plowing under the wild places that the Elves love.

* ‘’TabletopGame/GurpsBanestorm’’ has this as the setting’s origin story. Centuries ago, a group of Dark Elves attempted to summon a band that would exterminate the Orcs once and for all. The spell backfired, summoning numerous races to the world … including humans, who drove off the Orcs but proved to be a greater long-term threat since they’re organized, intelligent and prone to plowing under the wild places that the Elves love.