To join the program, launch the Play Store app on your Android smartphone and then touch the three line icon located inside the search bar in the top interface. You will then see a menu item called 'Dot Game'. The program is free to join and you can earn points from anything you buy from the Play Store, including in-app purchases and subscriptions. You can earn extra points by downloading a rotating list of popular apps every week, and take advantage of weekly promotions.
After you get some points, you can redeem them for Play Store credit, in addition to in-app purchases ̵
With every dollar spent, you are also approaching a higher level of rewards. There are four levels in total. Each comes with additional benefits. The most notable bonus is that you earn more points for a spent dollar than in the previous category. For example, with the platinum layer, you get 1.4 points per dollar compared to one point per dollar in the bronze level. The catch is that you have to maintain a certain level of spending to stay in a particular category.
If you want to earn extra credits on the Play Store, you can also download the long-running Google Opinion Rewards app, which allows you to earn rewards from the app by giving your two pennies on different topics.