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Into Unknown Waters by MoonlightWright reviews
Ryley Robinson is dead. He was dead before he hit the water on Planet 4546B. Meanwhile, surrounded and backed against the wall, Zero touches the door to the Thought Elevator and accidentally activates it. Volatile energy lashes out towards everyone as Lelouch's geass begins to go awry, having been kick started. The door to Subnautica's world opens in a show of blinding white light.
Crossover - Code Geass & SubNautica - Rated: M - English - Adventure/Sci-Fi - Chapters: 20 - Words: 187,271 - Reviews: 183 - Favs: 322 - Follows: 397 - Updated: 5/2 - Published: 12/22/2020 - Lelouch L., Suzaku K., Kallen S.
Eren the Exiled by DarkerEvening reviews
Beyond the walls. Beyond the sea is a world divided. The world will see him as a monster. A monster that needs to be destroyed. But to Leila Malcal... she sees him as Eren Jaeger. When they cross paths, their journey will determine the fate of all humanity...
Crossover - Code Geass & Attack on Titan/進撃の巨人 - Rated: T - English - Adventure - Chapters: 10 - Words: 83,776 - Reviews: 41 - Favs: 67 - Follows: 60 - Updated: 4/27 - Published: 12/31/2023 - [Eren Y., Leila M.] Julius K., Zeke Y.
All The King's Men by backwardsaile reviews
Long has the Fifth Kingdom, the Britannian Empire, been an isolationist among its peers. Long have the Kingdoms tried to establish contact. Now, in lieu of the Vytal Festival, Britannia sends a team of its best to compete as a show of cooperation. But how will the story of RWBY be affected by the new players? Are their motives as pure as they seem?
Crossover - Code Geass & RWBY - Rated: M - English - Adventure/Fantasy - Chapters: 14 - Words: 171,159 - Reviews: 53 - Favs: 147 - Follows: 182 - Updated: 4/26 - Published: 12/18/2019
Zero the Knightmare Slayer by jetslinger333 reviews
Some people would call Lelouch Vi Britannia many things: a liar, backstabber, tyrant, and others when he began his path of revenge. But what if He experienced someone else's life and knows that person's endeavor would make him a better person in life? This is how it Began.
Crossover - Code Geass & Kimetsu no Yaiba/鬼滅の刃 - Rated: T - English - Adventure/Spiritual - Chapters: 12 - Words: 66,698 - Reviews: 105 - Favs: 274 - Follows: 276 - Updated: 4/17 - Published: 1/18/2022
When Worlds Collide by StarKing28 reviews
Through the 21st century and in the early 22nd century, Charles led his nation through an era of peace, prosperity, and technological development. Although there were some conflicts along the way, the Empire stood strong and became a spacefaring nation along with its allies. However, that peace was shattered when a mysterious portal opened in Los Angeles in 2130s.
Crossover - Code Geass & Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: M - English - Sci-Fi/Fantasy - Chapters: 12 - Words: 146,189 - Reviews: 81 - Favs: 249 - Follows: 282 - Updated: 4/17 - Published: 4/3/2023 - Lelouch L., Cornelia L.B., Rory, Pina
A Young Girl's Guerilla War by RagnartheSemiGreen reviews
Tanya dies in an artillery barrage on the Rhine Front, contrary to both her and Being X's plans. Unwilling to let his chew toy escape so easily, Being X reincarnates Tanya back into Japan... Six years before Britannia conquers Area 11. (First posted on Space Battles)
Crossover - Code Geass & Youjo Senki: Saga of Tanya the Evil - Rated: M - English - Adventure/Drama - Chapters: 38 - Words: 495,845 - Reviews: 281 - Favs: 1,036 - Follows: 1,234 - Updated: 4/16 - Published: 11/13/2021 - Lelouch L., Kallen S., Naoto S., Tanya
Code Fantasy - R0: Warriors of Light by DarkFusion reviews
One year prior to his fated meeting that will grant him the Geass, Lelouch is offered power from a different Source in exchange for becoming a hero for more than just one world. In doing so he finds himself down a path of heroism that he will be anything but alone in walking, yet this path will lead into conflict with foes more fearsome than what Britannia could bring.
Crossover - Code Geass & Final Fantasy XIV - Rated: T - English - Fantasy/Adventure - Chapters: 9 - Words: 183,472 - Reviews: 54 - Favs: 149 - Follows: 185 - Updated: 4/15 - Published: 3/26/2022 - Lelouch L., Kallen S., Alphinaud L.
Code Geass Harry of the Uprising by EvaShinobiKaiserKnight reviews
A Prophesy Broken, A Command Spoken, A Requiem played, A World Remade. The Power of the Kings shall compel you live in a world of Isolation but shall grant you the power to live. But be warned for you will be compelled live in a with a different set of rules beyond mortal men. Do you have the resolve that is needed to live in such a world? I Lelouch Vi Britannian command you all...
Crossover - Harry Potter & Code Geass - Rated: M - English - Fantasy/Supernatural - Chapters: 8 - Words: 58,475 - Reviews: 35 - Favs: 136 - Follows: 160 - Updated: 4/4 - Published: 3/7/2023 - [Harry P., Hermione G.] [C.C., Lelouch L.]
The Road to Hell by Scapel reviews
Taylor Hebert left powerless after Gold Morning and raked by helplessness was forced to live a meaningless life in Area 11 she finally found meaning after one night of a return to normalcy (for her).
Crossover - Code Geass & Worm - Rated: T - English - Sci-Fi/Adventure - Chapters: 18 - Words: 142,511 - Reviews: 64 - Favs: 258 - Follows: 336 - Updated: 3/27 - Published: 9/18/2022 - Skitter
Six Paths of Rebellion by tymaxion reviews
(Adopted from Lord Maximus with his permission before anyone says anything) While battling Madara Naruto is sent into a new world with giant mechanical monsters used by a nation attempting to take over the world. With the aid of a girl named C.C. he plans to stop them by using power of Geass and the Sage of the Six Paths.
Crossover - Naruto & Code Geass - Rated: M - English - Sci-Fi - Chapters: 46 - Words: 379,780 - Reviews: 18 - Favs: 171 - Follows: 155 - Published: 3/23 - Naruto U., Lelouch L., C.C., Kallen S.
Code Diamond by Diamond Authority Fan reviews
Earth is a violent place. Holy Britannia Empire and its social darwinism are best proof of that. But Lelouch Vi Britannia made a promise to his sister that he will create a better world for her. But he will soon learn there are things greater then Britannian Empire.
Crossover - Code Geass & Steven Universe - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 997 - Reviews: 3 - Favs: 11 - Follows: 10 - Published: 3/17
A Certain Demon Emperor by Dath Zion reviews
It was known as magic, an escape for those bound by the laws of the world. To Lelouch, it had just been a means to an end but the cold sparks of fate were absolute and destiny had already carved the path he would choose. Would he destroy this world or create it anew?
Crossover - Code Geass & Toaru Majutsu no Index/とある魔術の禁書目録 - Rated: T - English - Mystery/Romance - Chapters: 3 - Words: 6,509 - Reviews: 3 - Favs: 45 - Follows: 56 - Updated: 3/11 - Published: 2/17 - Lelouch L., Aiwass, Coronzon
The Overlord Geass by PaulyThide reviews
A Supreme Being cannot be killed or defeated and even when stopped. It may come back for revenge. And so, the consciousness of the universe, God should have never attacked someone with the ability to destroy it all. A new era is about to begin, and while slowly gathering the strength to pay the debt. The Leader of Ainz Ooal Gown, will bring the world to its knees.
Crossover - Code Geass & Overlord/オーバーロード - Rated: M - English - Fantasy/Sci-Fi - Chapters: 18 - Words: 114,043 - Reviews: 173 - Favs: 628 - Follows: 690 - Updated: 17h - Published: 11/3/2021 - C.C., Kallen S., OC, Albedo
Lelouch of the Wings of Rebellion by MagusZero reviews
In an alternate world without Geass, Lelouch awakens to another power from the Collective Unconscious - Persona. Leading a band of phantom thieves through the Metaverse, he seeks to topple the Britannian regime, stealing one corrupt heart at a time. Featuring the cast and setting of Code Geass, put into Persona 5's overarching scenario. Now also posting on AO3.
Crossover - Code Geass & Persona Series - Rated: M - English - Supernatural/Crime - Chapters: 79 - Words: 634,333 - Reviews: 800 - Favs: 1,135 - Follows: 1,193 - Updated: 3/3 - Published: 8/6/2018 - Lelouch L., Kallen S., Shirley F., Leila M.
The Knight of Rebellion: Zero by Immortal Dragon 22 reviews
War. Cruelty. Bloodshed. The world is a cruel place. Lelouch knew this from the day his mother died and his sister crippled. Yet, years later, he receives a great power. The Power of the Kings. With this, Lelouch will change the very foundation of this world. He'll destroy it then create it anew. For he's the Knight of Rebellion. For he's The Man of Miracles. For He. Is. Zero! (AU)
Crossover - Anime X-overs & Code Geass - Rated: T - English - Sci-Fi/Fantasy - Chapters: 4 - Words: 38,008 - Reviews: 17 - Favs: 46 - Follows: 42 - Updated: 2/28 - Published: 7/12/2022 - Lelouch L., Zero
LL Returns by MaxTrueOmnipotent1 reviews
This is a sequel to RR Reborn and Return story. The original author hasn't been active for 10 years and left this story on a huge cliffhanger. Unwilling to accept this story as the end I made my own take on what a sequel to that story would be. I highly recommend you read RR: Reborn and Return before reading this story. There will be R-18 scenes you've been warned.
Crossover - Code Geass & Medaka Box/めだかボックス - Rated: M - English - Drama - Chapters: 1 - Words: 1,101 - Reviews: 5 - Favs: 8 - Follows: 9 - Updated: 2/26 - Published: 7/17/2023 - Lelouch L., Medaka K.
Code Geass: The Grey Chessmen by Generatedname reviews
An unknown enemy encountered during a Refrain bust leads the newly formed Black Knights to a discovery that warns of a coming global catastrophe. The question is, will they be ready in time to face it?
Crossover - X-Com & Code Geass - Rated: T - English - Sci-Fi/Drama - Chapters: 8 - Words: 169,114 - Reviews: 84 - Favs: 147 - Follows: 179 - Updated: 2/18 - Published: 7/21/2023 - Lelouch L.
Code Fantasy by Lord22
Cloud Strife is a show about terrorism.
Crossover - Final Fantasy VII & Code Geass - Rated: T - English - Tragedy/Adventure - Chapters: 1 - Words: 9,323 - Favs: 10 - Follows: 11 - Published: 2/7 - Cloud S., Tifa L., Lelouch L., Kallen S.
CodeSg1 by SataKazu
Stargate SG-1 and Code
Crossover - Stargate: SG-1 & Code Geass - Rated: M - English - Adventure - Chapters: 1 - Words: 365 - Published: 2/6
Evolution Geass: Uzumaki of the Retribution by SoulEmbrace2010 reviews
Naruto, Naruko, and Lucienne aim to destroy Britannia, in memory of their departed loved ones. The trio trained and prepared for the future war, but their hands are forced when they got caught up in the Shinjuku incident. In response, they start their campaign early to free Japan, only to find that there's more going on, and the world is at stake. AU, OOC, Naru/Harem, Mass-Xovers
Crossover - Naruto & Code Geass - Rated: M - English - Sci-Fi/Supernatural - Chapters: 17 - Words: 294,354 - Reviews: 293 - Favs: 694 - Follows: 718 - Updated: 2/3 - Published: 2/12/2021 - [Naruto U., C.C., Kallen S., Euphemia L.B.]
Here We Go Again by TTY7 reviews
After the Black Rebellion, Rei decides to stay in Area 11 in order to keep an eye on Lelouch and his 'younger brother'. But can she push past mixed emotions? Can she prevent an enemy from killing her friends and brother? Will she find love along the way or will she lose everything at the hands of chaos? Sequel to A Date With Destiny.
Crossover - Sailor Moon & Code Geass - Rated: M - English - Drama/Romance - Chapters: 124 - Words: 773,504 - Reviews: 348 - Favs: 90 - Follows: 77 - Updated: 1/27 - Published: 12/16/2010 - Rei H./Raye/Sailor Mars, Lelouch L.
In Search for an Answer by SnakeValerianSmash reviews
The hope of the old world from which I came had died, leaving only dust and ashes of its former home. but in this world he may find the answer he was looking for, along with these brats who keep pestering him about making a revolution against Britannia "Mr. Lynx can I have cookies?" "yes, only if you promise me that you will control your rebel brother"
Crossover - Armored Core & Code Geass - Rated: K - English - Sci-Fi/Drama - Chapters: 10 - Words: 50,693 - Reviews: 54 - Favs: 141 - Follows: 157 - Updated: 1/26 - Published: 6/4/2023 - OC, Lelouch L., Nunnally L.
Arc-V: The Geass Switch by MoonlightWright reviews
Things weren't supposed to go this badly. All Zero had to do was trap the Lancelot on Shikine island and get Suzaku to join him, easy. So how in the world did Zero end up in another dimension? This new place is in the middle of a war sure, but they don't have guns. They have duels? And monsters? Whatever happened to chess! Well, at least Zero has a hobby, taking down Academia.
Crossover - Code Geass & Yu-Gi-Oh! Arc-V - Rated: M - English - Drama/Adventure - Chapters: 48 - Words: 604,289 - Reviews: 340 - Favs: 374 - Follows: 395 - Updated: 1/8 - Published: 7/14/2019 - Lelouch L., Zero, Yuto, Yuya S.
Code Dino Crisis by Kaiju Slayer 9117 reviews
In the 21st century, mankind fought for the right to resources, which have left portions of earth ruined. As a result, some scientists have turned to Sakuradite as the main method of powering their devices, but Dr. Kirk proposed a clean, limitless energy, which he named Third Energy. Because of his breakthrough, many are out to steal his research, including the Black Knights.
Crossover - Dino Crisis & Code Geass - Rated: M - English - Horror/Sci-Fi - Chapters: 5 - Words: 55,955 - Reviews: 10 - Favs: 30 - Follows: 25 - Updated: 1/4 - Published: 3/24/2023 - Lelouch L., Cornelia L.B., Marrybell mB., Leila M.
Samurai Jack vs Holy Britannain Empire by Nexus Matrix reviews
What if, Samurai Jack was sent in a reality where he faces mechs bigger than his usual robots. If so, what would happen if he went against something like the Holy Britannia Empire to free Japan from their grasp? (Officially a story, now available)
Crossover - Samurai Jack & Code Geass - Rated: T - English - Chapters: 6 - Words: 18,027 - Reviews: 11 - Favs: 43 - Follows: 30 - Updated: 1/1 - Published: 1/15/2017 - Jack, Lelouch L., Kallen S.
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