Just a heads up to the not tech savy folks out there enjoying DQ. Although most avid gamers know this, for those that dont, there are two gamepad controllers which work flawlessly with android / bluetooth. There is others that work, but these are the go to stand out names i have come across.
Nvidia shield, and, more commonly found in every other house, xbox one, will pair with ease, and work perfectly on android, without the need to root, or use 3rd party apps such as sixaxis, etc.
Once you gamepad, you wont go back . Movement and playability becomes grande. Anyways, happy gaming.