Questions

Is there a beatmap specially made for opsu! ?

Any beatmap that is made for original osu! is also made for opsu!.

There are no beatmaps created specifically for opsu!.

I have many beatmaps in T-Aiko...

Cut and paste all the beatmaps to opsu/Songs manually using the device's File Explorer or equivalent.

Unconfirmed note: T-Aiko is unable to use mnt/sdcard/opsu/Songs directory for some reason (it gives unknown error).

Why is the default skin different?

All osu! graphic and other game assets are copyright ppy Pty Ltd. [...] You are NOT permitted to use these graphics outside of skins and/or beatmaps. This includes using them on other websites, games, products etc.

opsu! in Google Store?

A direct rip of fluddokt version as per mentioned in itdelatrisu issue #346 and fluddokt issue #232. itdelatrisu stated to not care as long as it does not violate the GPL license and fluddokt has not given a response as time of writing (24/12/2017, Christmas Eve).

The source of concern can be based on lack of same licensing (specifically, GPL-3.0), the commit history itself, the README.md not crediting fluddokt since it is based on fluddokt fork, and the unprofessional response to user Turquoise2_ regarding the "Loading" error faced rather than an attempt to actually fix it.

Consider downloading from official website releases for now rather than Google Play version whenever possible.

How can I adjust the volume?

You can adjust the volume in one of three ways:

• use the volume slider in the options menu,
• use the scroll wheel in the main screen, or
• use the scroll wheel while holding the Alt key in the song selection screen.