After the pyrrhic victory of the Human-Covenant War, the Covenant was split into many warring factions vying for the power of old. The UNSC was left, bloodied, but as the sole power in the Milky Way for now. After an incredible discovery within a set of Forerunner Ruins, an Exploration Fleet with Doctor Halsey at its head is sent out. What they find will change everything.

A mysterious Gate opens on Hood Street, Reach. The USSC Counterattacks. What will happen as the JSDF Comes through? ( AU)

The Spirit of Fire crew thought that after their mission on the Shield World will be their last and they will forever drift into the void. However, Fate has a different plan. Thrust into an unfamiliar land. How much will they affect the future of its inhabitants? Will they ever get back home?

Reach was lost. The final ship off world left. One last human remained as The Covenant closed in on them. One last act of defiance in the face of darkness won the favor of a God. Noble Six has been granted a new life in a world of fantasy. However the specter of war will always follow him.

Few years after the events of Halo Wars, the UNSC Spirit of Fire finds themselves above the orbit of a unknown world without any clue to where they are and what brought them here. Faced with a new obstacle the crew of the Spirit of Fire descends upon the world where they meet new allies and enemies, along with an relic of the past, as they try to find a way back home.

This story is set in late fall 2020 on the Krissen continent of the Shield World of Yggdrasil. The protagonists will be the 24th Airborne Battalion of the FSC (an international unit under the command of the UN) and the 7th Reconnaissance Team of Aerial Magicians of the Federation of Palas. The United Nations Federation and the UNSC along with Falmart will appear in the story.

En el planeta de Reach, en nueva Alejandría, una puerta misteriosa aparece y resulta ser el conector entre dos mundos, la ONI envía a fuerzas de la UNSC a explorar estas tierras nuevas y para ello requerían ayuda del equipo azul, noble y otros mas

In the dawn of the Didact's devastating massacre of New Phoenix's population at the end of Halo 4, a gate appears and unleashes an army unto the city. A redo of UNSC GATE, bare in mind that there may be a lack of similarities between this one and the old one.

When a Roman/Greek mysterious gate appears, how would the UNSC act? How would their retribution allies, the SA, react to the gate? How would the Empire that suddenly attacked the powerhouse that is called the UNSC react, when they arrive? How would the twenty-first century's JSDF react to the UNSC? Rated T. At least an update a week. UPDATE: NO MORE UPDATES AND REBOOT PUBLISHED

I WILL BE RESTARTING THIS STORY. I WILL KEEP SOME CHAPTERS THOUGH. I'VE BEEN DISCUSSING WITH A GREAT CONSTRUCTIVE CRITICIZER, AND I WILL RESTART EVERYTHING.

During the creation of the Gate it had appeared on Spark's Halo ring. Other than attempting to claim the ring as theirs they had also stolen something that was left to him. Now with aggressive force he will take it back from the other side no matter the cost and take care of whoever gets in their way. (Characters to be added)

After trying to escape the Covenant using the slipspace, The Pillar of Autumn is tackled by enemy troops forcing the Marines and the Master Chief to escape into a strange ring-shaped structure. Focused on his mission, the Master Chief will protect Cortana at all costs not only from Covenant troops and the inhabitants of that world.

el equipo noble y azul llegan a una misma linea temporal, pero no en el universo que pertenecen, si no, en otro totalmente diferente, el cual no cuenta con la tecnología que estos poseen y que esta en guerra debido a un portal con forma de puerta que apareció, asi que este grupo de Spartans tiene que adaptarse al nuevo ambiente y el hecho que no existe la UNSC allí.

On the planet of Reach, in new Alexandria, a mysterious door appears and turns out to be the connector between two worlds, the ONI sends forces of the UNSC to explore these new lands and for this they required help from the Blue team, noble and others

Los planes del Ur Didacta fueron frustrados sin embargo la humanidad no puede bajar la guardia aun. John y compañía están protegiendo uno de los mundos coloniales interiores importantes para su especie listos para enfrentar hordas de caballeros prometeos, o peor. No obstante las cosas están apunto de dar un giro enorme cuando sucesos extraños se manifiestan en el planeta.

After the war had ended with the UNSC victorious and the covent now defeated peace had arrived with the races meeting in harmitoy. But when ODST (y/n) arrives on earth, japan they were attacked by unknown forces. Now with a gate that brought the enemy threat here the UNSC has order forces to enter the gate for revenge of the dead humans and aliens the enemy has killed.

The conflict between an ancient empire and a modern military from another Earth was foreseen by many to be a strange affair. However, unknown to even both sides, the people of Falmart will find themselves joined by an unfamiliar third party, who come from a place that was least expected: Beyond the stars. The Autumn has risen, and the UNSC will leave its mark on the exotic world.

This is my first fan fiction so don't expect much. The UNSC has survived the Great War. They have the Separatists backing them up. Their tech now on par with their enemy, maybe better. and the Covenant Loyalists and Insurrectionists are slowly falling. It all seemed well. Until some unknown anomaly caught the UNSC off guard. What? What do you mean a Gate opened in New Tokyo?

After the battle of Algolis Ghost finds himself not only alive but on another world that the 21st century JSDF had come to find, a new earth hundred's of years before the human covenant war and now must do something he'd thought was impossible. Be human (Slight spoliers for the PROTOTYPE episode from halo legends inside, please watch it to understand the story better!)

Escaping Reach was easy, now having to deal with a world with magical girls, elves, fire dragons and an Empire that wants them gone can the UNSC forces survive? And can a certain Spartan-III get a certain priestess to stop humping his leg due to him being "Caked in blood." (Don't worry it's a mostly serious story...maybe...possibly...don't judge me)