The touch screen controls are usable. It runs good on the Google Pixel but it does cause the phone to heat up with excessive play. The games crashes occasionally as well  so it is recommended to save as much as possible so you don't have to do a part of a game multiple times. It does skip frames at times but the Roms are more than playable on the Pixel and for it being free it is a good emulator.
January 28 2017