When you are creating your game, you may want to periodically check how your games look from the point of view of the players.
To test your games go to the editing page of your game first. Then click on the Test Game button.
When the game simulator opens, you will see the screens which show what each player will see once they are playing the game. Once you click on the Complete or Submit button, the preview screen will proceed to the next screen for the player. The simulator behaves much like if you would hold a mobile device for each user, you can even record photos and videos using your laptop camera.
Once you finish testing, you can press the Test game button again to stop the simulator.
Want to know more about how to publishing and play your games, see: