Hello, I made a game (RPG) and I would like to add an option to unlock custom sprite/skin for characters. This option is not essential to use the app. That is the system that I want to make for this unlock option : A link in the app send the player on a website. The custom sprite could be unlocked by looking around 20 pages on a website (with contains advertising). At the pages number 20, a code is displayed and the player can use it in the app. (Page 1 send to page 2, page 2 to page 3... until page 20) Is it allowed? An other question about advertising for children. I read the guidelines, some rules are specific for children. Some data couldn't be collected. What is the age exact for those rules please? Thank you