I made a gaming control panel using an Arduino Leonardo to play simulators. Currently using it for DCS World, but it should work in most games just like any joystick / gamepad.
Analog JoyStick with Arduino - Tutorials
Using joystick in a game - Programming Questions - Arduino Forum
Arduino Leonardo Gaming Joystick - YouTube
DIY Joystick Game Controller using Arduino Leonardo and Joystick Module
Analoge joystick on Arduino Leonardo - Project Guidance - Arduino Forum
comment se servir de la carte arduino comme joystick - Français - Arduino Forum
Joystick Controlled Mouse with Arduino
Lab: Mouse Control With Joystick – ITP Physical Computing
DIY Joystick Game Controller using Arduino Leonardo and Joystick Module
ARDUINO] Utiliser Arduino Leonardo comme joystick USB - Check-Six Forums
AZDelivery Joystick Keypad Gamepad Shield compatible with Arduino/Duemilanove/Compatible with MEGA2560 / Leonardo including E-Book! : Amazon.co.uk: Electronics & Photo
GitHub - MHeironimus/ArduinoJoystickLibrary: An Arduino library that adds one or more joysticks to the list of HID devices an Arduino Leonardo or Arduino Micro can support.
Joystick Mouse Control | Arduino Documentation
Programming Ponderings: Arduino Joystick Library - Version 2.0
DIY Joystick Game Controller using Arduino Leonardo and Joystick Module
Leonardo Not Showing As Controller - Programming Questions - Arduino Forum