on the maze app for iPhone and iPad

This is a game barely needs any control.
The game interface is made up of rotatable stone discs.
In default status, they are deactivated, unable to rotate.
The character will follow the path on the stone discs automatically.
Your task is to collect keys to solve the maze.
And try to collect 3 stars if possible.
Frequently, the path on the discs will not be completely connected.
You only need to activate the rotation of some discs wisely in advance.
When the character moves to the center of any disc,
the other activated discs will rotate automatically.
Your success of connecting the path when needed
depends on whether you have correctly preset the rotation status.