Shows like Code Geass: Lelouch of the Rebellion

In 1972, the Apollo 17 mission discovered a hypergate to Mars on the surface of the moon. Soon a war breaks out between Earth and Mars, and Martian soldiers begin to descend from the sky, riding steel giants, intent on exterminating humanity.

After Colony (A.C.) 195. Mankind has moved into space. Thousands of people live on giant orbiting space colonies called "Sides." However, the Earth Government, which rules the colonies, is unjust and cruel. A group of revolutionaries builds five robotic weapons called Gundams and plans to send them to Earth to begin their fight for independence. Piloted by five young men, these Gundams carry the hopes and dreams of freedom of the colonists with them as they descend to Earth to begin Operation Meteor!

Universal Century 0087, 7 years have passed since the end of the One Year War between the Earth Federation and the Principality of Zeon. The Earth Federation has created an elite task force, known as the Titans, who are responsible for hunting the remaining Zeon forces. However, the power-hungry Titans have spurred the creation of a rebellious faction called the Anti-Earth Union Group (AEUG).

The year is 2307 A.D. Although fossil fuels have been depleted, humanity has obtained a new source of energy to replace them, in the form of a large-scale solar power generation system based on three huge orbital elevators. However, the benefits of this system are available only to a handful of major powers and their allies. In this world of never-ending conflict, a private armed organization appears, dedicated to the elimination of war through armed force. Its name is Celestial Being, and it is in possession of "Gundam" mobile suits.

When a young laborer escapes to the world aboveground, he discovers a violent land in which humans battle robots controlled by a power-hungry noble.

What would you do if you suddenly found yourself in the middle of a war? Teenager Amuro Ray sees his life shattered when war comes to his home. During the chaos, Amuro finds himself inside the mobile suit Gundam, the Earth Federation's new secret weapon, and he somehow gets it to work. Amuro and the other refugees flee their homeland on the warship White Base. This group of children and inexperienced soldiers will change the outcome of the war.

In the near future, humanity has taken its first steps towards journeying into the far reaches of the galaxy. Upon doing so they discover a huge race of insectoid aliens known as "Space Monsters." These aliens seem dedicated to the eradication of mankind as they near closer and closer to discovering Earth. In response, humanity develops giant fighting robots piloted by hand-picked youth from around the world. Shortly after the discovery of the aliens, Noriko Takaya, the daughter of a famous deceased space captain, enters a training school despite her questionable talents as a pilot. There, she meets her polar opposite, the beautiful and talented Kazumi Amano, and is unexpectedly made to work together with her as they attempt to overcome the trauma of war as well as their own emotions.

On the front lines of the war, Tanya Degurechaff, blond hair, blue eyes, and porcelain white skin, commands her squad with lisping voice. Actually, she is one of Japan's most elite salary men, reborn as a little girl into a world of magical warfare after angering a mysterious being who calls himself God.

When Banagher Links meets the mysterious Audrey Burne, he inherits the Unicorn Gundam and is swept up into the battle for space colony independence.

After the murder of Luna, the robot society that rules the planet starts to rust and decay. Death and despair spread through the land like wildfire. The only one unaffected by the affliction that becomes known as "The Ruin" is Luna's assassin, Casshern. Unable to remember if he really triggered this capital sin against the entire mechanized civilization, Casshern embarks on a journey to unravel the mystery that connects him, Luna, and the plague.

Caught in a 150-year-long war, interstellar nations reach the pinnacle of strategic combat at the hands of two genius leaders. Reinhard of the Galactic Empire, and Yang of the Free Planets Alliance lead the charge from opposing fronts. Fighting is their destiny, but in this vast universe torn by political intrigue, their greatest enemy may not be each other.

Cosmic Era 71. Mankind has developed into two subspecies: Naturals, who reside on Earth, and Coordinators, genetically enhanced humans capable of withstanding the rigors of space who inhabit orbital colonies known as PLANTs. The story revolves around a young Coordinator named Kira Yamato, who becomes involved in the war between the two races after a neutral space colony secretly developing mobile suits for the Earth Alliance is attacked by the PLANTs' military force, ZAFT.