o-o-o-o app for iPhone and iPad

Basic task: Rotating the ring makes the white dots are line up in a straight line.
In addition to this, You can find the fastest way to next level, just like the strategist;
And, You can also move and relax the white dots as you like, letting them run according to inertia and wait for coincidences to occur;
Also, You dont even have to think about how to clear the level. Just use those colored rings as keys to play your beautiful music.

However, please pay attention:
No matter what angle or distance, as long as the white dots are connected in a straight line, they will be regarded as pass through the level.
The darker the color of the ring, the faster the white point runs.
As you continue to deepen, more and more colors and tones will appear in the game.
If you want to replay or switch levels, you can click the blank space at the top of the game to open the corresponding panel.

Playing music with a galaxy, using electronics as a toy, thinking about philosophy in play...
Hope you can find your own fun in the game!