For emulators I mostly use the GAMEPAD Mode (X + Home)
Furthermore, you can still download the app and Game Lobby so the unit in SS mode (Y + Home) connect in order to play games, which for example, can use a MOGA controller.
+ Good workmanship
+ Good analog sticks and buttons
+ Media keys for controlling volume and track selection ect.
+ Fits comfortably in your hand
+ Super price performance ratio
- Complicated Donwload the Game Lobby apk
- The app is very badly designed, but works well
- For large hands is not very good, because the keys are placed very close to the edge (thus little counter space for the thumb)
- Long lead time
- Maybe even a bit too easy, because when lying in bed, tilts the whole very much forward. (Smartphone is heavier)
Otherwise really highly recommended and is doing what it should!