How to turn on/off music/sound in the game?
The buttons for turning on/off music/sound are situated in the configuration menu.
Is there a full-screen mode in the game?
This option can be enabled using the fullscreen button.
This button is situated between the configuration button and return button.
How to pause the game?
To pause the game, you need to click the exit game button in the lower right corner of the screen.
Why do you need mail?
You will receive gifts from friends in the form of extra lives and resources via mail.
Why do you need friends in the game?
Friends are an integral part of the game. They will send you extra lives. In the game you can compete with friends and also ask them to complete a level for you.
How to invite a friend in the game?
You can invite a friend by sending him or her an invitation from the friend inviting window.