The Mega-Emu at90usb162 Demo kits have been tested with the samsung galaxy tab 2.

The Android operating system will only supports one game pad at a time.

To connect usb devices to and android device you must use a (OTG) on the go adapter.

There are some great Arcade and video console emulators for Android,I recommend you to try them all with the original console joysticks, It makes it better gaming.