Moonga is a iphone game from Everdream Studios, the publisher of Dragon's Call. They are coming out with a new expansion pack called DENSARA.

Source: http://freetoplay.org/article/article_658/

Moonga is a free multi-player mobile game. Based on 5 cards you will need to build creative strategies to conquer your opponents cards. The more talented you will be, the better the chances you grow your collection of cards. This Massively Multiplayer Online game was created in January 2010. Since then, over 100’000 people have played this game and one million cards have been distributed.