I have just published VGB-Android 4.6.1, adding floating action button and optimizing File Selector controls for Nvidia Shield and other gamepads. If you do not like the floating button, disable it via "Settings | General | Show Action Button".
Added floating action button that starts the last played game.
Added "Show Action Button" option to the Settings.
Optimized controls for Nvidia SHIELD Portable and similar devices.
FIRE-R, FIRE-Y, and SELECT buttons open File Selector main menu.