I'm making a game that's pretty simple and I really only need to save one int for when the game is closed but all the tutorials and guids I've seen haven't been much help so far. So basically I want a way to either have the game resume right where I left off when I quit, have it load a specific scene when you resume playing, or have it save that single int. Having it load a specific scene would work best but I can use any of the options stated above. I'm using c# in Unity

I'm making a game that's pretty simple and I really only need to save one int for when the game is closed (the scene the payer is at), but all the tutorials and guides I've seen haven't been much help so far. 

So basically I want a way to either have the game, resume right where I left off when I quit, have it load a specific scene when you resume playing, or have it save that single int. Having it load a specific scene would work best but I can use any of the options stated above.