Sometimes the simplest game can be every bit as addictive and fun as monster games like Halo 3 or Gears of War. This is probably the reason why games like Pong still remain popular to this day and continue to inspire developers. While there are probably hundreds of versions of Pong-inspired games out there, one that will appeal to hardcore Pong fans and casual players alike is PONG! Multiplayer, a Firefox extension that allows you to indulge in Pong without leaving the comfort of your favorite browser.