game page updated to say, you can use the ps/gamepad/joystick collect scores 2 (just tested with a playstation compatible, schould work also in xbox controller, but fire is other shoot button: a) for Player2 blue ship, while other player can stay kind of trolling there, without effecting your Scores 2 , if only player moves it could increase fire ratio TODO: to be balanced with firepower, unknown 25% amount write in gamepage: https://investus.itch.io/spaceshooter2players3daddressableswebgl