This is the original Game Boy console. There are no game cartridges, only the console itself. It is an old item, and there is some instability in the power system, so it is being sold as junk. In addition to the console, a power adapter is also included. I have confirmed that it works without 4 AA batteries. Of course, I have confirmed that it works with batteries inserted as well. The sound is fine. The controller is also fine. *Please prepare the batteries yourself. However, to reiterate, it is being sold as junk, so please only purchase if you understand that it may need parts or repair.