If you game on a MacBook display – your game is probably rendering wrong unless you’ve adjusted your settings. If you’re a developer building a full screen game in AppKit (or Catalyst) – Apple’s APIs have some issues you need to be aware of. If you’re an iOS developer – you’re probably already familiar with the idea of the safe area. But – as we saw in the diagram – the safe area is still not the same as the available full screen area. The resolution picker lists both safe area and non safe area resolutions.