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

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

Quote:
The new version has got the slow-motion mode (combined with the fast-forward mode in the Settings) and a variety of fixes. More importantly, I have started adding workarounds for external SD card restrictions imposed by Android KitKat. If you are a KitKat user, the new MasterGear will let you keep your games on the external SD card, saving your gameplay states to /sdcard/MasterGear folder or the app-specific SD card folder, as KitKat prohibits third-party apps from writing arbitrary SD card folders. No, I do not know why Google made this restriction. I guess their Nexus devices simply do not have SD cards, so they never tested.
  • Added slow-motion mode, combined with fast-forward mode.
  • Fixed multitouch input in cases when it didnīt work.
  • Made a work-around for external SD card use on KitKat!
  • If canīt write to external SD card, saving states to /storage/sdcard0/MasterGear.
  • If MasterGear folder doesnīt exist, saving states to /storage/sdcard1/Android/data/com.fms.mg/files.
  • Fixed fast-forwarding in automatic frame rate mode.
  • Fixed a crash in Cheatopedia, when displaying the list.
  • Fixed rare crashes in gesture detection.

KITKAT NOTE:
The /storage/sdcard1/Android/data/com.fms.mg/files folder is deleted when you uninstall the app. To avoid losing your saved states when storing games on the external SD card, manually create the /storage/sdcard0/MasterGear folder in your internal storage.

https://play.google.com/store/apps/d...?id=com.fms.mg