BTW, it also provides 'Settings' function for high end users. clike the menu key on your phone, then you'll see it.
you can choose different control types such as joystick or 4-dpad,8-dpad.
you can also set control's size and transparency to suit your own taste.
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you can set hardware key mappings, it's so easy. Good for Xperia players, it's already well mapped.
Anyway, enjoy it, trust me, you won't regret your time. their website to download: Happy Bay - Free game apk download for Android