Heres a new version of the multi sega system emulator for Android:

Sega Master System/Game Gear emulator for Android has been updated. Changes:
* Switched to the latest android-27 SDK.
* Now using Android build tools version 27.0.2.
* Fixed gamepad on Nvidia ShieldTV and other AndroidTV devices.
* Any input devices named as "virtual-*" are now ignored.
* Any virtual (android-16) and disabled (android-27) devices are ignored.
News source: https://play.google.com

via http://emu-russia.net/en/