Mobile boxing game Punch Hero has passed 5m downloads in just six months.

Writing on its blog Gamevil, which developed the freemium game with Cocosoft, said that the title’s simple boxing mechanic and animation style appealed to a wide range of gamers, both casual and hardcore, with the Challenger Mode, in which players add a photo of a friend to a challenger, proving very popular.

Punch Hero launched in May for iOS devices and in August for Android.