What I want is that once the player downloads the game which is supposed to be free.
He can buy some levels of the game whuch when bought can be downloaded from the server.
There are some questions:
- What is this system called
- How can I do this?
- Can this be done on a Php server
- Can I implement it like when a user buys it, everytime he is going to play a new level the level is downloaded and them loaded