The PS2 was once very popular and gamers couldn't put it down. Many people have also played on the PS3, but I bet not many of you have heard of the PS4 gaming console. However, it's not a new release from Sony; it's currently just a concept product. It has drawn inspiration from previous versions and is much more powerful than any of its predecessors. The most notable feature is that its game controller and main unit are transparent - it's so cool! Moreover, they are connected via Bluetooth, so gamers are no longer restricted by wires, making for an even better gaming experience. If this PS4 gaming console were to be released, I'm sure gamers would go even crazier.