All operations are listed above.

I will explain from the left icon.

[Starting and ending the game]
You can start and end the game with each tap.

[Game Reload]
Redo the game.

[BGM On/Off]
You can select On/Off of BGM.

[Voice On/Off]
AI voice can be turned on/off

[AI and your display]
When it's your turn, the icon turns blue.
The number will display the number you guessed