I didn't build it, but there's ViGEm for creating virtual Xbox 360 controllers: https://github.com/ViGEm/ViGEmClient https://github.com/ViGEm/ViGEmClient So ea

I didn't build it, but there's ViGEm for creating virtual Xbox 360 controllers: https://github.com/ViGEm/ViGEmClient https://github.com/ViGEm/ViGEmClient So each client polls the local controller using the DX APIs, streams the state to the server and then the server creates virtual gamepads to send the input to the game.