You would need the appropriate libraries. The circuits@home shield (http://www.circuitsathome.com/products-page/arduino-shields/usb-host-shield-2-0-for-arduino/) has libraries and examples including a USB Joystick sketch USB_Host_Shield_2.0/examples/HID/USBHIDJoystick at master · felis/USB_Host_Shield_2.0 · GitHub.