Several game consoles can be found for popular video game play. The appropriate Play station is done by Sony. Currently, you have the version of Play Station 4. It is also called PS4. But you should expect problems also here. Play Station 3 problems may be there as in any electronic system. Look here for Free PSN codes for your PS4.
The PS4 improved on prior units by adding better graphics, motion sensor controllers, and Internet connectivity. The thing that drives sales on the PS4 and competing consoles are the games that can be played.