Hey! First, this should be in Help
also,
Basically you make the player have a secret code or something to access stuff (It can actually be very confusing, this guide can prolly explain it better than I can)
I’ll try to explain it anyway:
When a player gets to a certain point in the game, give the player a special item, then, a checker sees if the player has the item, then has a game ovelay saying, save progress, when the game overlay is pressed, give the player the code, maybe like 725102 or something, make this a property. Then if the player leaves, there can be a game overlay or something that asks for the code, then have the player input with a pop-up like this: option 1: 1 option 2: next number, option 1: 2 option 2: next number, etc. If the player presses a number, give an item special to that. Then when a 7 is inputted check if the player has any of the other items, if not, update a property. Then continue down the list for each number, then once each property is updated, update the first property of “725102”, and teleport player to spot. This is probably a very complicated version I just made up, the guide prolly can explain better than I can as I said before, but yeah.