The area of the central circle changes in time to music. Tapthearea whose color is same as the circle, at almost the sametimethat the circle is largest.

Do not touch the screen, while the color of the circleisgray.

Both timing and quick reaction to the color are important togetgood scores.

Including 10 tunes, from slow to fast.

You can mute / unmute SE(touch sounds) on "Setting" Page.

With some kinds of device, the cycle of central circle'schangeis out of sync with music.

In that case, you can adjust the problem on "Setting" Page.

Please note that depending upon the performance of thesmartphone unit, your taps do not work properly.

You're welcome to feedback.
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music files :
All rights of tunes(excluding Ave Maria) and music filesarereserved by the following right-holders.

Saia Hyouseki
http://fhouse.s17.xrea.com/

OTOnoniwa
https://www.assetstore.unity3d.com/en/#!/publisher/8355

Affordable Audio 4 Everyone
http://www.affordableaudio4everyone.com/

VertexStudio
https://www.assetstore.unity3d.com/en/#!/publisher/2053

GT-K
https://www.assetstore.unity3d.com/en/#!/publisher/8500

Maoudamashii
http://maoudamashii.jokersounds.com/