via http://www.aep-emu.de/

Marat Fayzullin has updated his (commercial) MasterSystem, GameGear, SG-1000, SC-3000 and SF-7000 emulator MasterGear for Android.

Quote:
Published MasterGear 2.7.4 for Android today:

https://market.android.com/details?id=com.fms.mg

This release catches up with the changes I have made to my other console emulators (VGBA, VGB, and iNES) over the last couple of weeks.

CHANGES:
* Fixed a Layout Editor problem where a button could go off-screen.
* Made buttons stick to the nearest screen edges.
* Made button cues solid.
* Fixed legacy wire-frame joystick display.
* Fixed a few bugs in the license verification code.
* Fixed handling of the FILL patch chunks inside .IPS files.
* Switched to surfaces for faster and smoother non-accelerated video.
* Further optimized synchronization between Java and native code.
* Made file selector load directory listings faster.