Series titles
The first game, an online free-to-play card battle game titled Kaku-San-Sei Million Arthur (拡散性ミリオンアーサー) was released in 2012, written by Kazuma Kamachi. The title was ported to the Nintendo 3DS in October 2014 with a new interface to match the system's two screens. An English language version of the game was released for Southeast Asia entitled Magnificent Million Arthur. It was also ported to the PlayStation Vita with additional features including voice acting, gameplay changes and the ability of a player to edit their deck. Square Enix closed the game's Japanese servers in 2015. On July 14, 2015 it was released in Europe and North America by the South Korean publisher Gamevil. Servers for this release were closed on December 7 of that same year.
A sequel game titled Kai-Ri-Sei Million Arthur (乖離性ミリオンアーサー) was released in Japan in November 2014. The service ended on September 30, 2020.
A virtual reality game titled Kai-Ri-Sei Million Arthur VR (乖離性ミリオンアーサー VR) was shown at the Tokyo Game Show in September 2016.[2] It was released in Japan on May 25, 2017, for the PC via Steam, requiring an HTC Vive headset to play. A PlayStation VR version was released in Japan on September 28, 2017. Released in English-speaking countries as Million Arthur VR: Character Command RPG, the PC version was released by Vive Studios in the United States and the Commonwealth nations (inc. the United Kingdom, Canada, Thailand, India, Australia and New Zealand) on October 12, 2017.
An arcade game called Million Arthur: Arcana Blood was developed by Arcana Heart’s developer Team Arcana, originally owned by Examu and released in Japan on November 21, 2017. A PlayStation 4 port was released on November 29, 2018, and was originally planned only for release in Japan. The game was later ported to PC and released worldwide on June 20, 2019. The plot revolves around many Arthurs armed with Excaliber blades fighting to become the true king. The roster of fighters features thirteen characters including faeries, clones, and guest fighters from other titles such as King of Fighters XIV and Trials of Mana. During combat, players can have three supporting fighters at a time from a selection of thirty one.
An MMORPG titled Han-Gyaku-Sei Million Arthur (叛逆性ミリオンアーサー) was released in China for iOS and Android in March 2018 and released in Japan in November 2018. The MMO was terminated on September 30, 2019.
An action role-playing game titled Kou-Kyou-Sei Million Arthur (交響性ミリオンアーサー) was released for iOS and Android in Japan during October 2018. Players create characters who explore 3D terrains, fight monsters, and perform special attacks with other characters within a players party. The mobile service shut down on May 12, 2020.
In 2021, Perfect World Games developed a licensed sequel codenamed "MA", it was officially unveiled as Kai-Ri-Sei Million Arthur: Ring in 2023.[3]