Medabots

In the near future, humans and robots coexist. “Robattles,” a competition in which Medarot are pitted against each other, is popular among kids. A Medarot’s consciousness, effectively its brains, is located in a Medal that can be inserted into and ejected from the robot body. By chance, nine-year-old Ikki finds a Rare Medal, and soon after has his own Medarot named Metabee. This is the story of their friendship and growth as they use wisdom and courage to fight countless opponents in robot battles.

Beyblade

Thirteen-year-old Tyson Granger (Takao Kinomiya), along with his fellow teammates, Kai Hiwatari, Max Tate (Max Mizuhura), and Ray Kon (Rei Kon), strive to become the greatest Beybladers in the world. With the technical help of the team's resident genius, Kenny (Kyouju), and with the powerful strength of their BitBeasts, the Bladebreakers armed with their tops (AKA: Blades) attempt to reach their goal. (Source: Anime News Network)

Pokémon

A young boy named Satoshi embarks on a journey to become a "Pokémon Master" with his first Pokémon, Pikachu. Joining him on his travels are Takeshi, a girl-obsessed Rock Pokemon Trainer, and Kasumi, a tomboyish Water Pokémon Trainer who may have a crush on him. Satoshi and Co. end up traveling through various regions, including Kanto, the Orange Islands, and Johto, and then enter the Pokémon League competitions there. Along the way, they run into many confrontations with Musashi, Kojirou, and Nyarth, a trio of Pokémon thieves who are apart of an evil organization called "Team Rocket". But everytime Team Rocket try to do their evil deeds, they fail thanks to Satoshi and his Pokémon. (Source: Anime News Network)

Yu-Gi-Oh!

Yu-Gi-Oh! Duel Monsters centers around the journey of the spirit of an ancient Egyptian pharaoh who is trying to re-discover who he was many years ago, since he has lost his memories. With the help of a boy, Yugi Mutou, the one who awakened the spirit, and his friends, he battles many villains and adversaries. Many of the villains have been linked to the Nameless Pharaoh's past, due to the Millennium Puzzle he holds and many try to take the puzzle and his power away from him. The series focuses on the card game aspect of it and the main theme represented throughout the series is friendship.

Yu-Gi-Oh! GX

Duel Academy, one of the most prestigious schools in Duel Monsters history. There, students learn the fundamentals of becoming not just duelists, but large business owners. Judai Yuki is a new student with only one thing on his mind: to become the next King of Games. Judai meets several friends, teachers, and even enemies at the large Dueling school. There, he'll have to face off against several different dorms&mdash;Slifer Red, Ra Yellow, and Obelisk Blue&mdash;to become the number one duelist. Will Judai be able to pass all of them? Based on Kazuki Takahashi's world-famous anime and manga, Yu-Gi-Oh!</cite>.

Digimon: Digital Monsters

Seven kids are transported to the Digital World, a strange place where digital creatures called "Digimon" reside. A group of Digimon soon befriend them and keep the kids out of harm's way. The children then discover they are the Chosen Children, which protect the Digital World from evil Digimon like Devimon and Vamdemon.

Pokémon the Series: Ruby and Sapphire

After participating in the Johto League, Ash decides to begin anew in yet another journey; this time by himself and Pikachu, in the land of Hoenn. Though he isn't alone for long, as 10-year-old May (whom dislikes Pokemon, but just wants to come along to see the world) travels with him after Pikachu destroys her bicycle. Ash also meets up with his old companion, Brock, and May's younger brother, Max. Together, they travel along in Hoenn, battling Gym Leaders, entering Contests, and other events on the way to the Hoenn League. (Source: Anime News Network)

Pokémon Origins

One day, Red, a boy filled with dreams of going on a Pokémon journey, is called to Professor Okido's lab. There, he and his rival Green are given a Pokédex in order to collect data on all of the Pokémon in the region. As Red works his way to become champion with his Charmander, he meets many people on his journey, including Old Man Fuji, a man who runs the home for abandoned Pokémon, and Reina, a girl who works there. As danger in Red's journey begins to peak, he and his partner Pokémon experience a transformation like never before... (Source: Anime News Network)

Puzzle & Dragon

The story is set in modern day Japan following the growth of the protagonist Taiga Akashi, an elementary school kid who wants to be a professional gamer someday. (Source: Crunchyroll)

Yu-Gi-Oh! VRAINS

The sixth anime series in the Yu-Gi-Oh! franchise. VRAINS is an acronym for "Virtual Reality Artificial Intelligence Network System". In futuristic Den City, people duel using digital cards in the VR space "LINK VRAINS" managed by SOL Technology, Inc. A mysterious organization known as the Knights of Hanoi hacks into LINK VRAINS in search of a runaway AI program, Ignis. One duelist with the username "Playmaker" stands against this threat. His true identity is high school student Yuusaku Fujiki, a skilled hacker with a dark past and a grudge against Hanoi. When he becomes the first to capture Ignis, a struggle between Yuusaku, SOL Technology, and the Knights of Hanoi ensues. (Written by Edo)