Does anyone know how to approach the following problem:
Say I have a free version with a limited amount of levels available in Google Store. I also want to sell a full version for one dollar. The two games are separate entities. Is there a way to make the full version retrieve the game state from the free version, so that the client doesn't have to replay old levels?
I tried searching the forums with keywords like "sell", "free", "unlock", "remember game state" but didn't really find any resources. Is there any tutorials on the subject I could check?
ANY help is highly appreaciated!