In the game, players travel to a different world and collect cards featuring creatures known as "Imajinn", of which there are over 200. An occupant of the other world is trapped in every card; by flipping the card, players can use the occupant's abilities during battles. The game's servers were terminated on September 28, 2012. Source: Wikipedia, "[en.wikipedia.org/wiki/Ni_no_Kuni_mobile_games%23Ni_no_Kuni%3A_Daibouken_Monsters Ni no Kuni mobile games]", available under the CC-BY-SA License.