Start over after the home button is pressed

I want the game to start from the main menu every time the app is opened. When I open the app the first time, it starts at the main menu. When I open the app a second time, it starts from where the I left off.

The same thing happens when I push the power button. I can play the game, leave it for 2 days, then when I open the app again, it is in the same spot where I left off. I want it to start the main menu instead.

How can I make it so that it always starts at the main menu?

 

In the Player settings, set Behavior in Background to Exit.

 

I don't see that as a possibility, so I would recommend loading the main menu scene in OnApplicationFocus and making sure that script exists in every scene.

 

I've updated Unity to 2018.4 since I made that post. The option I suggested is no longer available.