A short animation commemorating the 25th anniversary of the Yu-Gi-Oh! Official Card Game.

Anime adaptation of Konami's mobile game, Jikkyou Powerful Pro Yakyuu

The seventh anime series in the Yu-Gi-Oh! franchise.
 
The series takes place in the futuristic town of Gouha and stars Yuga Oudou, a fifth-grade, elementary school student, who loves both inventions and dueling. Feeling that the current rules of the Duel Monsters card game are too stifling, Yuuga successfully manages to install a new set of rules of his own creation known as "Rush Duel", allowing for more fast-paced and frantic dueling. The series follows Yuuga and his friends as they show off the delights of Rush Duels while under the watchful eye of the Gouha Corporation that oversees the city. (Source: Wikipedia)

Arata was just your normal high-schooler, until one day when things started to move. He gets entangled in a phone game called "Dragon Collection." With his only redeeming quality being lucky, what can he do about conquering the World? 
 
(Source: Shoujo-Sense)

A foreign transfer student from the city arrives one day in a Japanese country town. Enchanted by his air of mystery, his classmates nicknamed him "Matasaburou the Wind Imp" after a local legend. Eventually, they become friends and spend many days playing in the countryside. One windy day, Matasaburou returns to the city, leaving his classmates to speculate that he really was Matasaburou the Wind Imp and that he flew away on the wind.

The story takes place in the near future in a city called Heartland. Tsukumo Yuma is a young duelist who strives to become the Duel Monsters champion, despite being an amateur. One day, during a duel with a school bully, a mysterious spirit called Astral appears before Yuma, and helps him to win. Astral then explains to Yuma that he is searching for his lost memories, which have been transformed into 99 "Xyz Monster" cards called "Numbers" and have been scattered across the globe. The "Numbers" have the ability to possess the duelists who own them and bring out their darkest desires. In order to recover his memories, and collect the "Numbers" cards, Astral teams up with Yuma.

The Acorns and the Wildcat is a unique short film in picture-book format from the creator of Night on the Galactic Railroad and Gauche the Cellist. Unusually for an anime, a narrator reads Kenji's story aloud while the action is played out on the screen by a succession of warm and evocative illustrations brought to life by subtle touches of animation. If the film feels somehow familiar yet you can't put your finger on the reason why, it's probably the sumptuously minimalist animation by Yasuhiro Nagura, who was the animation director of Mamoru Oshii's artsy 1986 feature Angel's Egg. That, and Kenji's wildcat is said to have been the inspiration for Miyazaki's Panda/Totoro creature. The idea of reading Kenji's story aloud instead of playing it out as a drama is quite refreshing, and Kenji's magical language and narrative style are entirely sufficient to sustain interest. Combined with the spacey music and breathtaking art, the result is a pleasantly unassuming little gem of a film. 
(Source: pelleas.net)

While riding with Jack Atlas and Crow Hogan, Yusei Fudos's Stardust Dragon is captured by Paradox, a mysterious Turbo Duelist from the future, during a Turbo Duel and turned into a Sin Monster. With the help of the Crimson Dragon, Yusei chases after Paradox as he enters a time slip, ending up in the past. During this time, Paradox duels against Jaden Yuki, who is still able to use the powers of Yubel and The Supreme King. However, by this time Paradox had also captured Cyber End Dragon and Rainbow Dragon and overwhelms Jaden. He is saved thanks to Yusei and the Crimson Dragon. Jaden informs Yusei of Paradox's true intentions. By stealing various monsters from across time and turning them dark, he plans to kill Maximillion Pegasus, the creator of Duel Monsters, preventing the game from being created and causing the events of all three series to never happen. Yusei and Jaden agree to pursue Paradox, which leads them to the past and causes a meeting with the King of Games, Yugi Mutou. However, by the time Yusei &amp; Jaden arrive, Paradox had already attacked his time, supposedly killing both Pegasus and Yugi's grandpa, and had also managed to steal Blue-Eyes White Dragon and Red-Eyes Black Dragon. After explaining everything to Yugi, he agrees to fight with Yusei and Jaden against Paradox in the ultimate three-on-one duel to free the trapped monsters and save both the world and time itself before it's too late. 
(Source: Wikipedia)

This episode explains why the title of the series is "Flame of Recca". The things that happened in this short OVA was in the last volume, volume 33, of the tankoubon of Flame of Recca.

The legend of Watt Poe, a mysterious whale said to give happiness, in a world destroyed many years ago by a nuclear war.

Pastel ate the cookies Madoka made, and it shrunk her, but because of her condition she couldn't take part in the &ldquo;Miss Donburi Contest&rdquo;. To return her to normal, she needed the power-up bell from the clouds. However, a mysterious island floating in the air was absorbing clouds above Donburi Island. When they tried to get power bells back, enemies attacked them suddenly. Would they get back for the contest in time? 
(Source : AniDB)

Yu-Gi-Oh! 5D's is set in Neo Domino City some time after the events concerning Yugi Mutou (DM) and Judai Yuki (GX). A new form of dueling, "Riding Duels", now take place on motorcycles called "D-Wheels". While regular dueling still exists, Riding Duels have become a popular form of entertainment for spectators, who watch them in specially-designed stadiums.

The evil overlord Makuamuge is planning to take over both the game and real worlds, and it is up to the ninja Goemon, his friends, girlfriend, and giant robot to defeat Makuamuge's henchmen and save both worlds.

In the near future, Earth is at war with aliens called Worms. The war leaves the population of Earth decimated, with young men the main casualties. The Worms were beaten back but their re-emergence heralds the creation of a mecha unit called the Sonic Divers, piloted by 3 young girls to counter this threat.

Tokimeki Memorial brings together the twelve young girls from Kirameki High School, but revolves around the main girl, Fujisaki Shiori. The story starts at the beginning of the third school year, which is the last year before the main character can choose a girl and date her at the graduation. 

In a far away future, mankind lives underground in huge caves, unknowing of a world above with a sky and stars. 
In the small village of Jiha, Simon, a shy boy who works as a digger discovers a strange glowing object during excavation. The enterprising Kamina, a young man with a pair of rakish sunglasses and the passion of a firey sun, befriends Simon and forms a small band of brothers, the Gurren Brigade, to escape the village and break through the ceiling of the cave to reach the surface, which few believe exist. 
The village elder won't hear of such foolishness and punishes the Brigade. However, when disaster strikes from the world above and the entire village is in jeopardy, it's up to Simon, Kamina, a girl with a big gun named Yoko, and the small yet sturdy robot, Lagann, to save the day. 
The new friends journey to the world above and find that the surface is a harsh battlefield, and it's up to them to fight back against the rampaging Beastmen to turn the tide in the humans' favor! Pierce the heavens, Gurren Lagann!

Anubis, an ancient Egyptian evil that was defeated by Yugi's alter ego centuries ago, has returned to exact revenge. Wielding the power of the Eighth Millennium Item, Anubis is determined to destroy Yugi and take over the world.
 
(Source: Anime News Network)

In the early 21st century, an earthquake destroyed Tokyo. Japan lost its center of government and industry, and turned into a lawless territory. Looking for his sister, Takateru Suga learns that she was kidnapped by the powerful Koryukai gang. He decides to ally himself with a drag queen, two ex-mercenaries and a nun to destroy the crime organization and save his sister!

Whether it is the future or the past it is the world of fantasy and horror hiding in the shadow of the demon city. In the city, consecutive mysterious incidents that cannot be solved by science have occurred. To solve the incidents, they gather three girl detectives possessing special abilities. 
Hayama Kotono. She is an orphan living in a convent. 
Shirafuji Natuski. She is Kotono's classmate and a pop idol. 
Hijiri Misaki. She is a mysterious girl who fights against nightmares of her previous life. 
Those who want to bring the Judgement Day to the world. 
Those who want to save the world. 
Which is justice, and which is evil? 
When Kotono encounters a boy who lost his memory, the wheel of the story begins to move but slowly. Then, solving the mysteries, the three girls will confront the fate that will influence the existence of the human beings. 
(Source: AnimeNfo)

Aoba Riku has just transferred to a new high school because of his father's job, and things aren't quite what he expected. The headmaster's secretary controls the school while espousing the virtues of academic freedom, the teachers are even stranger than normal teachers, and half the student body is walking around with animal ears on. On his very first day, Riku is unfortunate enough to find himself at the center of the student council's latest event, which has him running for his life. All this on top of the normal high school rigour of popularity contests, crushes, and homework makes it unsure whether Riku will be able to survive this new school. 
(Source: Anime News Network)

Light Yagami is a genius high school student who is about to learn about life through a book of death. When a bored shinigami, a God of Death, named Ryuk drops a black notepad called a Death Note, Light receives power over life and death with the stroke of a pen. Determined to use this dark gift for the best, Light sets out to rid the world of evil… namely, the people he believes to be evil. Should anyone hold such power? 
 
The consequences of Light’s actions will set the world ablaze. 
 
(Source: Viz Media)

In the near future, Earth is at war with aliens called Worms. The war leaves the population of Earth decimated, with young men the main casualties. The Worms were beaten back but their re-emergence heralds the creation of a mecha unit called the Sonic Divers, piloted by 3 young girls to counter this threat.
 
(Source: Anime News Network)

Randou Rino is a young girl with a head full of air and a talking puppet on her hand. She is accepted into the illustrious Gokujou all-girl's school, and is summarily, almost curiously, accepted as part of the even more illustrious Gokujou Student Council, who has more power and business ventures than most large businesses. Now a part of the student council, she befriends the talented members of the Gokujou Student Council, leaving one to wonder how a girl with seemingly no talents or redeeming qualities would get chosen for such a group.
 
(Source: Anime News Network)

Long, long time ago there where both science and magic in the human world. But God became afraid of the Human's unlimited potential, so he divided the world into two and sealed them apart. One world with magic and the other one with science. 
 
Souta is a normal boy except that he has the "key" in his body to break the "seal." The evil witch Cendrillon want that power and tries to take it. Akazukin and Val, a silver wolf, came from the magic-world to prevent her from that. 
 
A grand story of a boy who will lead a checkered life and girls in fairly lands has just begun.