This is the worst emulator I have ever used. Was a pain in the butt to set up. I finally got it working but there's a good chance you might have to format your memory cards with perfectly good save files on them. On top of that the UI sucks  and if you accidentally hit the home button or switch to a different app or view your open apps  the game closes. I've played the first 45 minutes of sonic dx 3 times now and I'm not about to try it a 4th.
April 25 2017