Using virtual gamepad on android snaps out of emulator. | Next Generation Emulation
Look at the new virtual-gamepad in the Steam Link App BETA : r/SteamController
BT Controller: Use Your Android As A Bluetooth Gamepad For Another
Virtual Joystick - tools - Godot Asset Store
Virtual Joystick - Godot Asset Library
Play with your smartphone using the virtual gamepad | Recalbox Wiki
GitHub - duckleg/as3dpad: as3dpad is a virtual gamepad designed for Adobe AIR mobile. You can develop a iOS/Android game and receive user data from the touch screen. X and Y axis data
Unity 5 Virtual Joystick [Tutorial][C#] - Unity 3d - YouTube