To make the dice rolling, you could:
1. shake your iphone/ipad, the fast you shake it, the fast it will move.
2. put you finger onto the dice(it must stop at first), then drag it as you like, when you release your finger, the dice will run.
The link to the itunes app store lists below.
http://itunes.apple.com/us/app/happydice/id423198808?mt=8
You could change the dice face as you like. For each dice face, you have 30 choices.
Each time after you change your setting, the sound that the dice hit the edge of the iphone/ipad will be changed.
If you want to make the dice rolling faster/slower, you could also change the speed setting in the setting view.
