If you’re like most gamers, your PlayStation 4 is your primary console. But what if you want to use it as your primary console for another game system? Here’s how to do it. First, make sure that the other game system is disconnected from the internet and your PlayStation 4. Then, go to Settings on your PlayStation 4 and select System. Under “Primary Console,” select the other game system. You’ll now be able to play games on that system without having them automatically download to your PlayStation 4. ..