What's the best Android app for using my phone as a wireless gamepad or joystick for PC games?

XB CONTROLLER is a good Android app for using your phone as a wireless gamepad for PC games. It allows you to control your PC games using your Android device via Bluetooth or Wi-Fi, emulating a standard Xbox 360 controller. This eliminates the need for a physical gamepad, offering a convenient and portable gaming solution. The app offers customizable button mapping, allowing you to configure the controls to your preference for different games. Setting up XB CONTROLLER involves installing the app on your Android device and a server application on your PC. Once both are running and connected, you can configure the button layout and start playing your favorite PC games with your phone as the controller. The app supports various control schemes, including analog sticks, buttons, and motion controls, offering a versatile gaming experience. The app is rated 4/5 stars.