Once you’ve installed a game, it will be visible within the Games feature under the “Your Apps” tab. The progress bar gives you a first idea of how far you’re already in the game and reminds you of how many points you’ll get per minute and how many points you can earn in total with this particular game.
When you click on that game, it will show you the different steps you’ve already taken and what is still ahead of you. Here you will see when you’re supposed to be rewarded (for instance, based on the example in the screenshot below, the user get points after 2 minutes, then after 1 minute, then again after 2 minutes, etc.)