Arduino Joystick Shield

You can easy develop your Joystick games, and even communication each other with wireless nRF24L01. The shield sits on top of your Ardui-no and turns it into a simple controller. 7 momentary push buttons ( (4 big buttons + 2 small buttons + joystick select button ) and a two-axis thumb joystick gives your Ardui-no functionality on the level of old Nintendo controllers.