Transform your micro:bit into a handheld game pad or use it as a controller for other projects. You can also connect external DC 7-12V to power for micro bit development board. It can be used to simulate the mouse keyboard.
Keyes Wiki Page for Joystick Control Pad Shield
The BBC micro:bit go is the quickest and easiest way for children to get going with the BBC micro:bit. The BBC micro:bit is a pocket-sized computer that you can code, customise and control to bring your digital ideas, games and apps to life. Measuring 4cm by 5cm, and designed to be fun and easy to use, users can create anything from games and animations to scrolling stories at school, at home and on the go - all you need is imagination and creativity. The BBC micro:bit is completely programmable. That means each of its LEDs can be individually programmed as can its buttons, inputs and outputs, accelerometer, magnetometer and Bluetooth.