to start think of two numbers. press the start button, when it asks you what first number type one of the two numbers you chose. when it asks you second number enter the remaining number. then it will give you two letters. write them down in its original order. then exit out of the game and then come back. then click on the button that says enter code. when it asks you first letter type the first letter. then when it asks you second letter type the second letter. then you should get the two numbers you first typed in.
this is a clever way i thought up of how to save a game without cloud data. i was inspired by old game codes on nes games. don't even try to rip this and use it in your game because it wouldn't work.