History Fanfic / XCOMTheThirdWar

* AdaptationalExpansion: In this story, it's stated that, in addition to harnessing Earth's psychic power, the Templars are also interested in preserving Earth's culture. Their introduction to the story is when Geist contacts Bradford and the Commander to ask that they recover records of the music and plays held in the Sydney Opera House, in exchange for sending one of their own to assist XCOM.

* BrainlessBeauty: Aqua -- it's mentioned that, as opposed to GoingCommando, she made her panties invisible ''because she wanted to avoid the embarassment of people seeing them''. The girls of Team RWBY are dumbfounded by her lack of intelligence.
* ChekhovsGun: In Chapter 6, Megumin arrives alte to the mission briefing (she forced her way into the mission in place of Grif) and misses out on the fact that the Lost are attracted to loud noises, like explosions. Sure enough, [[spoiler:she ends up using Explosion on a small group of Lost, attracting ''the entire horde'' to her team's location]]. Bradford concedes that they should have repeated that tidbit of information to her before she left.

''[[https://www.fanfiction.net/s/12576345/1/X-COM-The-third-war XCOM: The Third War]]'' is a fanfic by [[https://www.fanfiction.net/u/8429311/TehArbitur53 TehArbitur53]]. It is a MegaCrossover featuring ''VideoGame/XCOM2'', ''WebAnimation/{{RWBY}}'', ''WebAnimation/RedVsBlue'', ''Franchise/{{Halo}}'', and ''LightNovel/KonoSuba''.

''[[https://www.fanfiction.net/s/12576345/1/X-COM-The-third-war XCOM: The Third War]]'' is a fanfic by [[https://www.fanfiction.net/u/8429311/TehArbitur53 TehArbitur53]]. It is a MegaCrossover featuring ''VideoGame/XCOM2'', ''WebAnimation/{{RWBY}}'', ''Machinima/RedVsBlue'', ''Franchise/{{Halo}}'', and ''LightNovel/KonoSuba''.

* DoomedHomeTown: More like '''[[UpToEleven Doomed Home UNIVERSE]]'''. ADVENT has already conquered the universes the various crossover characters have come from, as well as many others. The reason most of our cast is still alive is that the device used to summon them pulled them in from a time before ADVENT arrived in their home universes.

* LoadsAndLoadsOfCharacters: The cast includes twelve characters from ''WebAnimation/{{RWBY}}'', seven members of [[Machinima/RedVsBlue The Blood Gulch Reds and Blues]], [[VideoGame/{{Halo}} Master Chief and Cortana]], the main cast of ''LightNovel/KonoSuba'', and roughly ten or so from ''VideoGame/XCOM2'' and that number is only going to increase as the story goes on.

* ItsAllMyFault: Megumin has a {{Downplayed}} case of this in chapter 7, believing she is responsible for [[spoiler:causing all of the Lost in Sydney to attack the team]]. Notably, [[JustifiedTrope she's right]]: [[spoiler:her usage of Explosion is what attracted the Lost to the team]].

* PantyThief: Kazuma's legendary luck once again allows his 'Steal' skill to net him a girl's panties, with Velvet being the unlucky girl in question.

* StoryBreakerPower: [[AvertedTrope The author does not want to have characters that possess these,]] and has told a reviewer that he would not add in characters from ''Manga/MyHeroAcademia'' for this reason - they are way too powerful for this setting.
* WordOfGod:
** When asked how ADVENT managed to conquer the ''Franchise/{{Halo}}'' universe, the author stated that they absorbed some of the Covenant remnants into themselves and used them to assist in conquering the UNSC and Swords of Sanghelios.
** Additionally, in this timeline, the only DLC missions that were completed are those that were part of ''Shen's Last Gift''
** As for our heroes:
*** The cast from ''WebAnimation/{{RWBY}}'' was pulled from a time between Volumes 2 and 3.
*** The Reds and Blues are from a time between Volume 13 and Volume 15.
*** Master Chief and Cortana are from shortly after ''VideoGame/Halo3''.
*** The ''LightNovel/KonoSuba'' cast were pulled from shortly after Season Two of the anime.

* ItsAllMyFault: Megumin has a {{Downplayed}} case of this in chapter 7, believing she is responsible for [[spoiler:causing all of the Lost in Sydney to attack the team]]. Notably, [[JustifiedTrope she's right]]: [[spoiler:her usage of explosion is what attracted the Lost to the team]].

* ChekhovsGun: In Chapter 6, Megumin arrives alte to the mission briefing (she forced her way into the mission in place of Grif) and misses out on the fact that the Lost are attracted to explosion. Sure enough, [[spoiler:she ends up using explosion on a small group of Lost, attracting ''the entire horde'' to her team's location]]. Bradford concedes that they should have repeated that tidbit of information to her before she left.

[[https://www.fanfiction.net/s/12576345/1/X-COM-The-third-war XCOM: The Third War]] is a fanfic by [[https://www.fanfiction.net/u/8429311/TehArbitur53 TehArbitur53]]. It is a MegaCrossover featuring ''VideoGame/XCOM2'', ''WebAnimation/{{RWBY}}'', ''Machinima/RedVsBlue'', ''Franchise/{{Halo}}'', and ''LightNovel/KonoSuba''.

* MegaCrossover: There's already characters from five different universes, and the author has expressed some interest in adding ''VideoGame/{{Titanfall}}'' to the mix. Additionally, Nagito Komaeda from ''VideoGame/{{Danganronpa}}'' makes an appearance in Chapter 4.

[[https://www.fanfiction.net/s/12576345/1/X-COM-The-third-war XCOM: The Third War]] is a fanfic by [[https://www.fanfiction.net/u/8429311/TehArbitur53 TehArbitur53]]. It is a MegaCrossover featuring ''VideoGame/XCOM2'', ''WebAnimation/{{RWBY}}'', ''Machinima/RedVsBlue'', ''Franchise/{{Halo}}''.

* ImperialStormtrooperMarksmanshipAcademy: Megumin cannot hit anything with any ranged weapon, even managing to miss hitting a target with a ''grenade launcher''. However, the aforementioned incident with the grenade launcher nocked a tree into several ADVENT troopers, taking them out. XCOM decides to make her a grenadier so that she stands a chance of hitting ''something''.

** Mars: the largest of the havens, and functionally the center of the Resistance, it is located in the Himalayas. It's XCOM's headquarters.
** Deimos: Located in the Sahara, it's built inside of a network of canyons and caves. Owing to this, its the primary source of raw materials for XCOM.

* RagTagBunchOfMisfits: OF the heroes summoned by XCOM, more than half are teens, and they aren't really that mature in personality terms.

* DoomedHomeTown: More like '''[[UpToEleven Doomed Home UNIVERSE]]'''. ADVENT has already conquered the universes the various crossover characters have come from, as well as many others. The reason most of our cast is still alive is that the device used to summon them pulled them in from a time before ADVENT arrived in their home universe.

* MegaCrossover: There's already characters from five different universes, and the author has expressed some interest in adding ''VideoGame/{{Titanfall}}'' to the mix.

* ImperialStormtrooperMarksmanshipAcademy: Megumin cannot hit anything with any ranged weapon, even managing to miss hitting a target with a ''grenade launcher''. However, the aforementioned incident with the grenade launcher nocked a tree into several ADVENT troopers, taking them out.

* BenevolentPrecursors: The Forerunners fill this roll, [[{{Irony}} which is rather ironic given that they returned mankind to the stone age in their home universe:]] they not only provided XCOM with a means to summon heroes from other universes to aid them in defeating ADVENT, but also left easy to read instruction on how to do so.

*** The ''LightNovel/KonoSuba cast were pulled from shortly after Season Two of the anime.

** Mars: the largest of the havens, and functionally the center of the Resistance. It's XCOM's headquarters.

** Phobos: Located on an island chain in the Pacific Ocean, it's considered to small and isolated to be a danger to ADVENT, and provides XCOM would food. It's also the headquarters of the Templars.

* As for our heroes:
** The cast from ''WebAnimation/{{RWBY}}'' was pulled from a time between Volumes 2 and 3.
** The Reds and Blues are from a time between Volume 13 and Volume 15.
** Master Chief and Cortana are from shortly after ''VideoGame/Halo3''.
** The ''LightNovel/KonoSuba cast were pulled from shortly after Season Two of the anime.

* DoomedHomeTown: More like '''[[[UpToEleven Doomed Home UNIVERSE]]'''. ADVENT has already conquered the universes the various crossover characters have come from, as well as many others. The reason most of our cast is still alive is that the device used to summon them pulled them in from a time before ADVENT arrived in their home universe.

** When asked how ADVENT managed to conquer the ''Franchise/{{Halo}}'' universe, the author stated that they absorbed some of the Covenant remnants into themselves and used them to assist in conquering the UNSC and Swords of Sanghelios.

* RagTagBunchOfMisfits: OF the heroes summoned by XCOM, more than half are teens, and they aren't really that mature in personality terms.

* BenevolentPrecursors: The Forerunners fill this roll, [[Irony which is rather ironic given that they returned mankind to the stone age in their home universe:]] they not only provided XCOM with a means to summon heroes from other universes to aid them in defeating ADVENT, but also left easy to read instruction on how to do so.

* AdatationalExpansion: In this story, it's stated that, in addition to harnessing Earth's psychic power, the Templars are also interested in preserving Earth's culture. Their introduction to the story is when Geist contacts Bradford and the Commander to ask that they recover records of the music and plays held in the Sydney Opera House, in exchange for sending one of their own to assist XCOM.