Hong Kong-based Mad Head games is one of the new generation of upwardly mobile Chinese developers. It's released over a dozen games, but early casual action titles and entertainment apps such as Meowlody and Speedy Rhythm Dinner have now been replaced with more complex games.

Its key title is Tower of Saviors, a hybrid match-3 card-battling RPG, which has performed strongly in southeast Asia, gaining over eight million downloads. And now Mad Head has signed a publishing deal with US powerhouse Storm8 to bring the newly culturalised game - renamed War of Dragons - to western markets.