I love how arcade games were a kind Cambrian explosion in terms of user controls. We had configurations with dual joysticks (Robotron, Battlezone), single stic

I love how arcade games were a kind Cambrian explosion in terms of user controls. We had configurations with dual joysticks (Robotron, Battlezone), single stick and buttons (Defender), trackball and buttons (Missile Command), spinner and buttons (Tempest), all buttons (Asteroids) and probably a few more that I don't remember. My only complaint is that makes it really hard to build a cabinet with all of those combinations in the present day.