I was playing SPB earlier and the system where you couldn't go past stages that you've already done i want to know if it's really hard or how time consuming it is... Thanks
The method they used is a series of chapters. IN the main menu, you can choose a chapter to go to, but by default, only the first chapter is open. To be able to get to the second chapter, you must beat the first, and so on.
I imagine they used a series of Bools to determine wether or not a player is able to reach a chapter, and if they are, enable it in the gui as an option.
To recreate this you will need; -A series of places (Every chapter was a unique place, making it v easy to change the world) -A single game that contains all these places, to share data+teleport between -A data store key for the player. something like: "Unlocked Chapters"