Ok I want to create a mobile game and when it hits the store offer more levels more a price. Kind of like destiny is doing with their game.
I never did it before and I don't want to design myself into a corner so im hoping to get some input from people who have done it.
Basically how do I design my game to where if I release a free download and offer purchase able add-ons and not destroy the game or saved file?
Thank you in advance.