Audiences of any age, gender, and nationality, are welcome. There is not much language components, so anyone from any country can enjoy this game. Tap on the door, then tap on the phone icon. Then you dive into the world of mysterious phone. You need to find out the 4 digit number to proceed to the next level. There are clues from other areas of the level where you can discover the hints. You can always tap on the Hint icon if you need help!