Setting your target platform

New Unity projects normally default to targeting standalone desktop platforms. If this works for you, you do not need to change anything. Let's see:

1. Open the Build Settings window (File | Build Settings…) and review the Platform list
2. Choose your target platform. For example:
   
   • If you're building for Oculus Rift or HTC VIVE, for example, choose PC, Mac & Linux Standalone
   • If you're building for Windows MR, choose Universal Windows Platform
   • If you are building for Google Daydream on Android, choose Android
   • If you are building for Google Cardboard on iOS, choose iOS
3. Then press Switch Platform