Top 10 Mecha Anime of 2013
1. Gundam Build Fighters
The story is set in the near future when GunPla Battles, competitions that pit Gundam plastic models against each other, have become popular worldwide in the "Second GunPla Boom." Sei Iori, a first-year middle-school student and the only son of a model shop owner, is talented at building GunPla, but inexperienced in the GunPla Battles. He encounters a mysterious boy named Reiji, who happens to be an accomplished Gundam Fighter. Together, they strive for the GunPla Battle world championships.
2. Gargantia on the Verdurous Planet
The story begins in the distant future in the far reaches of the galaxy. The Human Galactic Alliance has been constantly fighting for its survival against a grotesque race of beings called "Hidiaazu." During an intense battle, the young lieutenant Ledo and his humanoid mobile weapon Chamber are swallowed up into a distortion of time and space. Waking from his artificially induced hibernation, Ledo realizes that he has arrived on Earth, the planet on the lost frontier. On this planet that was completely flooded by the seas, people live in fleets of giant ships, salvaging relics from the seas' depths in order to survive. Ledo arrives on one of the fleets called Gargantia. With no knowledge of the planet's history or culture, he is forced to live alongside Amy, a 15-year-old girl who serves as a messenger aboard the Gargantia fleet. To Ledo, who has lived a life where he knows nothing but fighting, these days of peace continue to surprise him.
3. Code Geass: Akito the Exiled - The Wyvern Divided
With her previous triumphs under her belt, Leila Malcal has now been promoted to Lieutenant Colonel and commanding officer of W-0. After having foiled an attempt to kidnap the General of the European army, she recruits the three perpetrators in order to make up for the lack of W-0's pilots. Ayano Kosaka, Yukiya Naruse, and ringleader Ryou Sayama accept, in hopes of finding a place to belong. When they are ordered to perform a commando raid by dropping into enemy lines, Leila decides to join them to prevent unnecessary casualties.
As the unit rushes into the fight, Akito finds himself possessed by an uncontrollable lust for violence, slaughtering anyone that gets in his way. Little does he know, he is soon to come face to face with the one responsible for placing the bloodthirsty curse upon him, someone he is far too familiar with...
(Source: MAL rewrite)
4. Ghost in the Shell: Arise - Border:2 Ghost Whispers
Second movie of Ghost in the Shell: Arise.
5. Ghost in the Shell: Arise - Border:1 Ghost Pain
The anime's story is set in 2027, one year after the end of the fourth non-nuclear war. New Port City is still reeling from the war's aftermath when it suffers a bombing caused by a self-propelled mine. Then, a military member implicated in arms-dealing bribes is gunned down.
During the investigation, Public Security Section's Daisuke Aramaki encounters Motoko Kusanagi, the cyborg wizard-level hacker assigned to the military's 501st Secret Unit. Batou, a man with the "eye that does not sleep," suspects that Kusanagi is the one behind the bombing. The Niihama Prefectural Police detective Togusa is pursuing his own dual cases of the shooting death and a prostitute's murder. Motoko herself is being watched by the 501st Secret Unit's head Kurutsu and cyborg agents.
6. Gargantia on the Verdurous Planet OVA
Episodes 14 and 15, released with the first and third BD/DVD volumes.
7. Date A Live
Itsuka Shido is a high school boy. On the last day of the spring holidays, an explosion destroys the town and a girl in armor appears in front of him. Shido's sister-in-law, Kotori, tells him that the girl is called "Special Disasterous Designated Creature: Spirit", which causes a timespace quake. Kotori disclosed that she is the commander of the anti-spirit organization Ratatosk and orders him to go out on a date with the spirit girl. Kotori says, "I don't ask you to beat the spirit. Just let her fall in love with you and save the world."
8. Valvrave the Liberator 2
Haruto and his comrades continue to fight against the forces of Dorssia. However, many things remain unanswered in the midst of battle, including the past of L-Elf and his fellow soldiers' past, the destiny of the mysterious girl Liselotte, and the feelings of Haruto, Shōko, and Saki. The relationships and loyalty of each and every member of each army will be tested as the clash of ideals and power reaches its climax.
(Source: Anime News Network)
9. Majestic Prince
In the latter half of 21st century, humans leave the Earth and begin to live in space. In order to adapt to the environment in space and deal with the hostile aliens in Jupiter, genetically engineered children called "Princes" are artificially raised and trained to be pilots of armed robots "AHSMB (Advanced High Standard Multipurpose Battle Device). This is a story about one of the teenage "Princes", Hitachi O Izuru, who studies in an academic city Grandzehle.
10. Valvrave the Liberator
True Calendar (T.C.) 71 - A new age where 70% of the human population lives in space thanks to the development of "Dyson Sphere", a city in space.
The world is divided into two main powers: The Dorssia Military Pact Federation, a power which grew out of a military alliance, and the Atlantic Rim United States (ARUS), which grew in power as it expanded its trade agreements. The minor nation of JIOR has declared neutrality between these two forces and maintains its peace through economic prosperity.
Within the JIOR's Sphere, Haruto Tokishima lived an ordinary life as a high school student in the division known as "Module 77"—until the Dorssian military begins their sudden invasion!
But the whole world will be shaken when Haruto meets the mysterious humanoid weapon, Valvrave!
(Source: Aniplex USA)