Ryu Ga Gotoku Kizuna (龍が如く 絆, lit. "Like a Dragon Bond") is a game developed by SEGA and published by GREE for iOS devices, and android devices as a spin-off of Sega's Yakuza series. The game is a free to play social card game. The game was shutdown on August 31, 2012.
Gameplay[]
"This is a card battle game in which the player becomes a resident of the familiar "Kamimuromachi" and fights against foreign enemies that threaten him while cooperating with other residents. Familiar characters from the original will appear with a number of special moves.
In the game, while proceeding with requests from residents, collect and nurture fellow cards and build your own deck. As the title suggests, "bonds" are important, and not only can users form a "pole alliance" and fight against powerful enemies, but also fighting with friends will have a beneficial effect. If you show remarkable activity, you can move up to the top of the ranking and get the best reward." [2]