How to set the iPhone game ringtone, please advise.

When you say game ringtone, do you mean setting the ringtone of incoming SMS to the music that comes with the game? Or change the dubbing in the game?

The former only needs to download game music and then change the ringtone format of iphone, and then synchronize with itunes.

The latter depends on the design of the game itself. Some games can replace the original music with the music that comes with the iphone, but most games

Music cannot be changed.