Not just one, but two Gates have been opened. Saderan Empire takes this opportunity to try to invade both at the same time. But, when the army comes through those gates, they will find out that: their proud strength are nothing compared to these worlds. Contains some OCs, one of them is OP, be advised.

Four years after the closure of the GATE, the portal between the Special Region and Earth reopens once again after the otaku, Captain Yoji Itami, successfully reconnected the other world. As the JP government once again tries to maintain their monopoly on the GATE. Instead, the UN forces Japan to send with them, the Resource Development Administration. What lies for the RDA ahead?

The legends said that when the Gate opened it would lead The Empire to a world beyond their greatest dreams, but they never considered what forces would defend such a world. They didn't expect the Goddesses of this world to descend and protect their people. They didn't expect them to travel through the Gate. They didn't expect them to be this... strange.

The UNSC Infinity wasn't the only ship that managed to flee Earth before the Guardian shut down all electronics. The UNSC Last Light managed to escape and is now lost in space, now hovering over an unknown planet and slowly being dragged into a war that is not their own. Will the crew of the Last Light manage to find a way home or be stuck on a planet which is not their own

ADVENT has been gone for ten years. In that time, the commander had gotten married, had three kids, and got things as close to what they were before the invasion as possible. But what happens when a new foe appears and tries to destroy it all? Thus, XCOM fought.

After two years of peace and prosperity, a mysterious gate had opened on Korhal within the capital city of Augustgrad. From it, invaders emerge straight out of medieval times as they bare threats of slavery and death to the Terran world they had set foot on. But they were soon going to learn they had picked a fight with the wrong people. R&R please.

Emperor Molt got more than he bargain for when he wished for conquest of another world beyond the gate to define his reign in the history of the empire.

8 Years after the end of the Reaper war a magical gate opens in Vancouver on earth. The Alliance recovering from a galactic war is thrown into yet another war(this time without andromeda) Cover is made by Bioware for the Mass effect 3 Multiplayer Earth DLC. (Post ME3)

10 years after the Aggressors left earth, peace rained until a Gate appears in Ginza Japan. Now the Earth Defence Force mounts an invasion to the Special region. How will the Empire respond to a military that has face giant bugs and other terrors? Would you like to know more?

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.

Seventeen years after World War 3, the world was not the same as it once was. Scarred, beaten, but not broken. As the damage heals, fate had other plans. An enemy will come and will try to claim domination over the world but made one fatal mistake. They say war is hell - now they will experience a new kind of hell.

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.

"He who fights monsters should see to it that he himself does not become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." – Friedrich Nietzsche. (AU)

A spin-off story based on oblivon2991's crossover story Gate:Thus the Sorcerous Kingdom Fought There. Follow Alsilia, a veteran soldier of a vassal country under the Sorcerous Kingdom's jurisdiction, and embark onto an adventure in the special region! What awaits her on the other side? Read and find out! And as always! Onwards for the Supreme Beings!

In another place, in another time, the Empire invaded two Gates. One goes through the modern-day Japan, while the other lead straight to the last democratic nation that stood defiant in a dying world.

Just before the start of Red Alert 3, Rising Sun campaign, the Empire is transported to another world. How will their destiny change by this? Was this their destiny from the beginning? Let's find out!

Amidst the Mayhem, the Gate shall open. A lord of the demons will cross through, riding on the wings of an Eagle made of steel, and lead the way of those that will conquer.

The multiverse is at risk as those that align with the evil increase in size. The Interdimensional Union of Alien Space Bats tp combat this threat forms an Empire to do battle against the forces of evil! 1st Installment in the Universal Empire Series.

Saderans, a prideful people, too prideful. In their hubris, they convinced themselves into infallability. Too late would they realize their arrogane comes with a price, a price neither money, nor slaves, nor promises would pay. Only eternal servitude, to a much larger, much stronger, and far more terrifying power than even their own gods. Contains gore and other similar acts.

Before the JSDF arrived, a conflict was already on the brink of going off as two different societies were about to clash over the future of the world that's filled with Magic, but also filled with demons, genocidal maniacs and bitter men out for revenge...Three-way Crossover, Naruto and Zero no Tsukaima included.

Twenty years after the nuclear bombs fell, a ray of hope comes from Gate to another world. In this strange world, the post-apocalypse survivors of Dead Moscow have found a chance to live again, but the Polis Rangers of the Spartan Order find threats both familiar and fantastical from achieving their goal. With fire and sword, they will fight back. "If not us, then who?"

(updated as of 2/18/2020) what do you get when you combine the strongest MANN in the world with a magic-infused teleporter to other dimensions and a mission to get back home...you get one hell of an adventure...travel with SAXTON HALE through space and time itself [series]

What if the gate had opened in the South of France and instead of a medieval army filled with mythical creatures exiting it Titans did. Now the French people & their allies look to possibly begin the process of performing attempting to strike back against an unusual enemy in a foreign world finding a blurred line between "friend" and "foe" Warning: Out of order character deaths.

A dimensional portal appeared on holy ground, and Imperial ambitions were being considered for this 'new' world. Conquest would have been the simplest act to give in... were it not for those 'brave' souls yet to return, and their long absence ruining such convictions. A final group is sent through to gather knowledge for future battles... only to find more dilemmas than desirable.

A new enemy has made itself known in Fiore, the likes of which had emerged from a mysterious structure they now call a "gate". Now a new world has been opened that is filled with strife, political disputes and brand new adventures for our favorite guild; Fairy Tail. Though it won't be like any other they've had before, nor will the experiences be either.