Area of Attack app for iPhone and iPad

Hundreds of years ago, a huge meteorite suddenly landed on the ancient mainland, the
land was broken into dozens of islands floating on the ocean, the peaceful life of human beings was broken from then on.
Mysterious meteorite brought huge strength, mutated monsters and secret area appeared on each continent, monsters attack wild animal at the beginning, everything seems to go toward worse later, human faces unprecedented threat...
However, humans also got unique abilities from meteorite, and began to form force and magic. Human become stronger gradually and united each continent to establish an alliance of defense. Heroes of the alliance are usually responsible for guarding home, but also some heroes need to explore the secret area, exterminate those monsters that threaten human beings, in order to obtain rich rewards。