If you want to play games with peripherals by UDGAME, please make sure to use UDIAN official adapted peripheral equipment. Already connected a Bluetooth but UDGAME prompts no device? Please reopen UDGAME and enter from the upper right corner of this interface to test key if there is any black track on the screen when you press the buttons of keyboard or mouse. If not, either the working mode of Bluetooth is wrong, or UDGAME is not compatible with this external device.