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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: 175 - Favs: 312 - Follows: 388 - Updated: 8h - Published: 12/22/2020 - Lelouch L., Suzaku K., Kallen S.
Command and Conquer: Azur Twilight by DieFinaleFlumen reviews
The famous GDI general was embroiled in a long journey the day before embarking on another road of no return. "Don't you think you are a failure?" McNeil looked at the cross-shaped scar on Lilin's hand thoughtfully. "I used to live in a place like apocalypse, what isn't a failure?" The fall of a hero. — English isn't my native language.
Crossover - Code Geass & Command & Conquer - Rated: T - English - Sci-Fi/Adventure - Chapters: 112 - Words: 331,520 - Reviews: 5 - Favs: 26 - Follows: 25 - Updated: 23h - Published: 9/27/2023 - M. McNeil, Charles dB., A. Darlton, Gene 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: 40 - Favs: 59 - Follows: 54 - 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: 143 - Follows: 180 - Updated: 4/26 - Published: 12/18/2019
Code Violet – A RWBY x Code Geass crossover by DonVitoM reviews
Violet Rose is a man with a vision. He shall destroy this world, and create a new and better one in its place. His first step - the liberation of Vale from the iron grip of the Atlesian military. (Or the fic where Lelouch vi Brittania is reincarnated as the brother to Ruby Rose. Watching Code Geass is not required to enjoy this, but there may be vague spoilers for it)
Crossover - Code Geass & RWBY - Rated: M - English - Suspense/Adventure - Chapters: 15 - Words: 52,732 - Reviews: 12 - Favs: 39 - Follows: 53 - Updated: 4/25 - Published: 2/19 - Lelouch L., Team RWBY, Team JNPR
War of the Seven Kings by Sephiroth12285 reviews
With danger approaching the universe, seven candidates are selected by a mistress with the power over time with seven backers who support them. Extracted from his world, Lelouch is taken in as a selected candidate, supported by the mistress to compete against his rivals. Will he have the ability to take on the other six Kings and save the world from the threat facing everyone?
Crossover - Code Geass & Super Robot Wars - Rated: M - English - Adventure/Sci-Fi - Chapters: 6 - Words: 67,383 - Reviews: 58 - Favs: 59 - Follows: 60 - Updated: 4/25 - Published: 2/15 - Lelouch L.
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: 101 - Favs: 269 - Follows: 271 - 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: 146,187 - Reviews: 81 - Favs: 238 - Follows: 271 - 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: 280 - Favs: 1,024 - Follows: 1,227 - 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: 52 - Favs: 140 - Follows: 175 - Updated: 4/15 - Published: 3/26/2022 - Lelouch L., Kallen S., Alphinaud L.
Gate: Clash of Ideologies by GTI-1 reviews
The war is over yet a new one is about to begin. Forces old and new shall meet for the first time and the meeting of those that could have been will meet a nation so different yet steeped in blood. Ideologies will clash, values conflict, conflicts emerge as lines are drawn. Their contact shall cause a cascade throughout the history of humanity.
Crossover - Code Geass & Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: M - English - Fantasy/Sci-Fi - Chapters: 4 - Words: 43,336 - Reviews: 30 - Favs: 42 - Follows: 47 - Updated: 4/9 - Published: 3/31 - Lelouch L., OC, Dimensional Supervisor
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: 135 - Follows: 155 - 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: 253 - Follows: 331 - 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: 145 - Follows: 124 - Published: 3/23 - Naruto U., Lelouch L., C.C., Kallen S.
Star Geass by RGGAM reviews
Luke and his allies try to escape the Galactic Empire and they arrive at Planet Earth ruled by the Britannian Empire as their paths cross with an exiled prince now two rebellions become one as they must fight both the Britanniana and the Galactic Empires epic battles, suspense, that will leave you spellbound!
Crossover - Star Wars & Code Geass - Rated: T - English - Adventure/Sci-Fi - Chapters: 10 - Words: 111,695 - Reviews: 13 - Favs: 36 - Follows: 35 - Updated: 3/21 - Published: 11/12/2023 - Luke S., Darth Vader, Lelouch L., Suzaku K.
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: 44 - Follows: 53 - 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: 17 - Words: 110,228 - Reviews: 170 - Favs: 620 - Follows: 685 - Updated: 3/5 - Published: 11/3/2021 - C.C., Kallen S., OC, Albedo
Enthrallment Colors by undead3 reviews
Prince of the rogue human state, the Britannian Empire, Lelouch stumbles into grander conspiracies as he makes a bid for position within the Empire. Meanwhile Hana Shepard has been flung head first into a race against a renegade Spectre with the fate of all life in the balance. Are these two rising stars saviors, or destined to burn the galaxy in the flames of war?
Crossover - Code Geass & Mass Effect - Rated: M - English - Drama/Sci-Fi - Chapters: 16 - Words: 86,640 - Reviews: 49 - Favs: 62 - Follows: 74 - Updated: 3/5 - Published: 1/8 - Lelouch L., Kallen S., Shepard, Garrus V.
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: 1,127 - Follows: 1,184 - 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: 44 - Follows: 41 - 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 00 Stardust by Gundam Meister of Rituals reviews
Three Gundam Build Fighters was transported to a new world and tasked to stopping an Emperor from overthrowing the gods and merging everyone into a single mind. But little do they know that old threats will come to this new world. But they will not falter and will slash through to the future! Rated M just in case.
Crossover - Code Geass & Gundam Build Fighters/ガンダムビルドファイターズ - Rated: M - English - Chapters: 4 - Words: 13,157 - Reviews: 8 - Favs: 31 - Follows: 34 - Updated: 2/19 - Published: 11/3/2023
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: 139 - Follows: 171 - Updated: 2/18 - Published: 7/21/2023 - Lelouch L.
Code Geass: SEEDs of Defiance by KiraYamato90 reviews
To defy the world, the world defies oneself. an occurrence in the order of the world had become chaos and therefore brings another world's order to settle the judgment. the SEEDs have been sown and they will grow to defy the world. (KIRA X Lacus X CG girls(not yet fully chosen)
Crossover - Gundam Seed & Code Geass - Rated: M - English - Adventure/Romance - Chapters: 3 - Words: 25,763 - Reviews: 13 - Favs: 57 - Follows: 61 - Published: 2/17 - [Kira Y., Lacus C., Euphemia L.B., Cornelia L.B.]
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