Kai-Ri-Sei Million Arthur is basically the sequel of Kakusansei Million Arthur made by Square Enix, the latter which mobile version has already been discontinued. The game features turn-based battles with up to 4 people cooperating to fight monsters in dungeons; battles are engaged through the use of cards over four different factions with distinctions in each class and special skills on each of them, minor communication systems, and a room-hosting mechanism. As with games with similar theme, it features the mechanics for upgrade and evolution. The rarity is divided from normal to million rare. The game is available for iOS and Android as of now.